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Module sre
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<h1 class="epydoc">Source Code for <a href="sre-module.html">Module sre</a></h1>
<pre class="py-src">
<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-comment">#</tt> </tt>
<a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Secret Labs' Regular Expression Engine</tt> </tt>
<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L4"></a><tt class="py-lineno"> 4</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># re-compatible interface for the sre matching engine</tt> </tt>
<a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Copyright (c) 1998-2001 by Secret Labs AB. All rights reserved.</tt> </tt>
<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># This version of the SRE library can be redistributed under CNRI's</tt> </tt>
<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Python 1.6 license. For any other use, please contact Secret Labs</tt> </tt>
<a name="L10"></a><tt class="py-lineno"> 10</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># AB (info@pythonware.com).</tt> </tt>
<a name="L11"></a><tt class="py-lineno"> 11</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L12"></a><tt class="py-lineno"> 12</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># Portions of this engine have been developed in cooperation with</tt> </tt>
<a name="L13"></a><tt class="py-lineno"> 13</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># CNRI. Hewlett-Packard provided funding for 1.6 integration and</tt> </tt>
<a name="L14"></a><tt class="py-lineno"> 14</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># other compatibility work.</tt> </tt>
<a name="L15"></a><tt class="py-lineno"> 15</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment">#</tt> </tt>
<a name="L16"></a><tt class="py-lineno"> 16</tt> <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="L17"></a><tt class="py-lineno"> 17</tt> <tt class="py-line"><tt class="py-docstring">r"""Support for regular expressions (RE).</tt> </tt>
<a name="L18"></a><tt class="py-lineno"> 18</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L19"></a><tt class="py-lineno"> 19</tt> <tt class="py-line"><tt class="py-docstring">This module provides regular expression matching operations similar to</tt> </tt>
<a name="L20"></a><tt class="py-lineno"> 20</tt> <tt class="py-line"><tt class="py-docstring">those found in Perl. It supports both 8-bit and Unicode strings; both</tt> </tt>
<a name="L21"></a><tt class="py-lineno"> 21</tt> <tt class="py-line"><tt class="py-docstring">the pattern and the strings being processed can contain null bytes and</tt> </tt>
<a name="L22"></a><tt class="py-lineno"> 22</tt> <tt class="py-line"><tt class="py-docstring">characters outside the US ASCII range.</tt> </tt>
<a name="L23"></a><tt class="py-lineno"> 23</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L24"></a><tt class="py-lineno"> 24</tt> <tt class="py-line"><tt class="py-docstring">Regular expressions can contain both special and ordinary characters.</tt> </tt>
<a name="L25"></a><tt class="py-lineno"> 25</tt> <tt class="py-line"><tt class="py-docstring">Most ordinary characters, like "A", "a", or "0", are the simplest</tt> </tt>
<a name="L26"></a><tt class="py-lineno"> 26</tt> <tt class="py-line"><tt class="py-docstring">regular expressions; they simply match themselves. You can</tt> </tt>
<a name="L27"></a><tt class="py-lineno"> 27</tt> <tt class="py-line"><tt class="py-docstring">concatenate ordinary characters, so last matches the string 'last'.</tt> </tt>
<a name="L28"></a><tt class="py-lineno"> 28</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L29"></a><tt class="py-lineno"> 29</tt> <tt class="py-line"><tt class="py-docstring">The special characters are:</tt> </tt>
<a name="L30"></a><tt class="py-lineno"> 30</tt> <tt class="py-line"><tt class="py-docstring"> "." Matches any character except a newline.</tt> </tt>
<a name="L31"></a><tt class="py-lineno"> 31</tt> <tt class="py-line"><tt class="py-docstring"> "^" Matches the start of the string.</tt> </tt>
<a name="L32"></a><tt class="py-lineno"> 32</tt> <tt class="py-line"><tt class="py-docstring"> "$" Matches the end of the string.</tt> </tt>
<a name="L33"></a><tt class="py-lineno"> 33</tt> <tt class="py-line"><tt class="py-docstring"> "*" Matches 0 or more (greedy) repetitions of the preceding RE.</tt> </tt>
<a name="L34"></a><tt class="py-lineno"> 34</tt> <tt class="py-line"><tt class="py-docstring"> Greedy means that it will match as many repetitions as possible.</tt> </tt>
<a name="L35"></a><tt class="py-lineno"> 35</tt> <tt class="py-line"><tt class="py-docstring"> "+" Matches 1 or more (greedy) repetitions of the preceding RE.</tt> </tt>
<a name="L36"></a><tt class="py-lineno"> 36</tt> <tt class="py-line"><tt class="py-docstring"> "?" Matches 0 or 1 (greedy) of the preceding RE.</tt> </tt>
<a name="L37"></a><tt class="py-lineno"> 37</tt> <tt class="py-line"><tt class="py-docstring"> *?,+?,?? Non-greedy versions of the previous three special characters.</tt> </tt>
<a name="L38"></a><tt class="py-lineno"> 38</tt> <tt class="py-line"><tt class="py-docstring"> {m,n} Matches from m to n repetitions of the preceding RE.</tt> </tt>
<a name="L39"></a><tt class="py-lineno"> 39</tt> <tt class="py-line"><tt class="py-docstring"> {m,n}? Non-greedy version of the above.</tt> </tt>
<a name="L40"></a><tt class="py-lineno"> 40</tt> <tt class="py-line"><tt class="py-docstring"> "\\" Either escapes special characters or signals a special sequence.</tt> </tt>
<a name="L41"></a><tt class="py-lineno"> 41</tt> <tt class="py-line"><tt class="py-docstring"> [] Indicates a set of characters.</tt> </tt>
<a name="L42"></a><tt class="py-lineno"> 42</tt> <tt class="py-line"><tt class="py-docstring"> A "^" as the first character indicates a complementing set.</tt> </tt>
<a name="L43"></a><tt class="py-lineno"> 43</tt> <tt class="py-line"><tt class="py-docstring"> "|" A|B, creates an RE that will match either A or B.</tt> </tt>
<a name="L44"></a><tt class="py-lineno"> 44</tt> <tt class="py-line"><tt class="py-docstring"> (...) Matches the RE inside the parentheses.</tt> </tt>
<a name="L45"></a><tt class="py-lineno"> 45</tt> <tt class="py-line"><tt class="py-docstring"> The contents can be retrieved or matched later in the string.</tt> </tt>
<a name="L46"></a><tt class="py-lineno"> 46</tt> <tt class="py-line"><tt class="py-docstring"> (?iLmsux) Set the I, L, M, S, U, or X flag for the RE (see below).</tt> </tt>
<a name="L47"></a><tt class="py-lineno"> 47</tt> <tt class="py-line"><tt class="py-docstring"> (?:...) Non-grouping version of regular parentheses.</tt> </tt>
<a name="L48"></a><tt class="py-lineno"> 48</tt> <tt class="py-line"><tt class="py-docstring"> (?P<name>...) The substring matched by the group is accessible by name.</tt> </tt>
<a name="L49"></a><tt class="py-lineno"> 49</tt> <tt class="py-line"><tt class="py-docstring"> (?P=name) Matches the text matched earlier by the group named name.</tt> </tt>
<a name="L50"></a><tt class="py-lineno"> 50</tt> <tt class="py-line"><tt class="py-docstring"> (?#...) A comment; ignored.</tt> </tt>
<a name="L51"></a><tt class="py-lineno"> 51</tt> <tt class="py-line"><tt class="py-docstring"> (?=...) Matches if ... matches next, but doesn't consume the string.</tt> </tt>
<a name="L52"></a><tt class="py-lineno"> 52</tt> <tt class="py-line"><tt class="py-docstring"> (?!...) Matches if ... doesn't match next.</tt> </tt>
<a name="L53"></a><tt class="py-lineno"> 53</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L54"></a><tt class="py-lineno"> 54</tt> <tt class="py-line"><tt class="py-docstring">The special sequences consist of "\\" and a character from the list</tt> </tt>
<a name="L55"></a><tt class="py-lineno"> 55</tt> <tt class="py-line"><tt class="py-docstring">below. If the ordinary character is not on the list, then the</tt> </tt>
<a name="L56"></a><tt class="py-lineno"> 56</tt> <tt class="py-line"><tt class="py-docstring">resulting RE will match the second character.</tt> </tt>
<a name="L57"></a><tt class="py-lineno"> 57</tt> <tt class="py-line"><tt class="py-docstring"> \number Matches the contents of the group of the same number.</tt> </tt>
<a name="L58"></a><tt class="py-lineno"> 58</tt> <tt class="py-line"><tt class="py-docstring"> \A Matches only at the start of the string.</tt> </tt>
<a name="L59"></a><tt class="py-lineno"> 59</tt> <tt class="py-line"><tt class="py-docstring"> \Z Matches only at the end of the string.</tt> </tt>
<a name="L60"></a><tt class="py-lineno"> 60</tt> <tt class="py-line"><tt class="py-docstring"> \b Matches the empty string, but only at the start or end of a word.</tt> </tt>
<a name="L61"></a><tt class="py-lineno"> 61</tt> <tt class="py-line"><tt class="py-docstring"> \B Matches the empty string, but not at the start or end of a word.</tt> </tt>
<a name="L62"></a><tt class="py-lineno"> 62</tt> <tt class="py-line"><tt class="py-docstring"> \d Matches any decimal digit; equivalent to the set [0-9].</tt> </tt>
<a name="L63"></a><tt class="py-lineno"> 63</tt> <tt class="py-line"><tt class="py-docstring"> \D Matches any non-digit character; equivalent to the set [^0-9].</tt> </tt>
<a name="L64"></a><tt class="py-lineno"> 64</tt> <tt class="py-line"><tt class="py-docstring"> \s Matches any whitespace character; equivalent to [ \t\n\r\f\v].</tt> </tt>
<a name="L65"></a><tt class="py-lineno"> 65</tt> <tt class="py-line"><tt class="py-docstring"> \S Matches any non-whitespace character; equiv. to [^ \t\n\r\f\v].</tt> </tt>
<a name="L66"></a><tt class="py-lineno"> 66</tt> <tt class="py-line"><tt class="py-docstring"> \w Matches any alphanumeric character; equivalent to [a-zA-Z0-9_].</tt> </tt>
<a name="L67"></a><tt class="py-lineno"> 67</tt> <tt class="py-line"><tt class="py-docstring"> With LOCALE, it will match the set [0-9_] plus characters defined</tt> </tt>
<a name="L68"></a><tt class="py-lineno"> 68</tt> <tt class="py-line"><tt class="py-docstring"> as letters for the current locale.</tt> </tt>
<a name="L69"></a><tt class="py-lineno"> 69</tt> <tt class="py-line"><tt class="py-docstring"> \W Matches the complement of \w.</tt> </tt>
<a name="L70"></a><tt class="py-lineno"> 70</tt> <tt class="py-line"><tt class="py-docstring"> \\ Matches a literal backslash.</tt> </tt>
<a name="L71"></a><tt class="py-lineno"> 71</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L72"></a><tt class="py-lineno"> 72</tt> <tt class="py-line"><tt class="py-docstring">This module exports the following functions:</tt> </tt>
<a name="L73"></a><tt class="py-lineno"> 73</tt> <tt class="py-line"><tt class="py-docstring"> match Match a regular expression pattern to the beginning of a string.</tt> </tt>
<a name="L74"></a><tt class="py-lineno"> 74</tt> <tt class="py-line"><tt class="py-docstring"> search Search a string for the presence of a pattern.</tt> </tt>
<a name="L75"></a><tt class="py-lineno"> 75</tt> <tt class="py-line"><tt class="py-docstring"> sub Substitute occurrences of a pattern found in a string.</tt> </tt>
<a name="L76"></a><tt class="py-lineno"> 76</tt> <tt class="py-line"><tt class="py-docstring"> subn Same as sub, but also return the number of substitutions made.</tt> </tt>
<a name="L77"></a><tt class="py-lineno"> 77</tt> <tt class="py-line"><tt class="py-docstring"> split Split a string by the occurrences of a pattern.</tt> </tt>
<a name="L78"></a><tt class="py-lineno"> 78</tt> <tt class="py-line"><tt class="py-docstring"> findall Find all occurrences of a pattern in a string.</tt> </tt>
<a name="L79"></a><tt class="py-lineno"> 79</tt> <tt class="py-line"><tt class="py-docstring"> compile Compile a pattern into a RegexObject.</tt> </tt>
<a name="L80"></a><tt class="py-lineno"> 80</tt> <tt class="py-line"><tt class="py-docstring"> purge Clear the regular expression cache.</tt> </tt>
<a name="L81"></a><tt class="py-lineno"> 81</tt> <tt class="py-line"><tt class="py-docstring"> escape Backslash all non-alphanumerics in a string.</tt> </tt>
<a name="L82"></a><tt class="py-lineno"> 82</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L83"></a><tt class="py-lineno"> 83</tt> <tt class="py-line"><tt class="py-docstring">Some of the functions in this module takes flags as optional parameters:</tt> </tt>
<a name="L84"></a><tt class="py-lineno"> 84</tt> <tt class="py-line"><tt class="py-docstring"> I IGNORECASE Perform case-insensitive matching.</tt> </tt>
<a name="L85"></a><tt class="py-lineno"> 85</tt> <tt class="py-line"><tt class="py-docstring"> L LOCALE Make \w, \W, \b, \B, dependent on the current locale.</tt> </tt>
<a name="L86"></a><tt class="py-lineno"> 86</tt> <tt class="py-line"><tt class="py-docstring"> M MULTILINE "^" matches the beginning of lines as well as the string.</tt> </tt>
<a name="L87"></a><tt class="py-lineno"> 87</tt> <tt class="py-line"><tt class="py-docstring"> "$" matches the end of lines as well as the string.</tt> </tt>
<a name="L88"></a><tt class="py-lineno"> 88</tt> <tt class="py-line"><tt class="py-docstring"> S DOTALL "." matches any character at all, including the newline.</tt> </tt>
<a name="L89"></a><tt class="py-lineno"> 89</tt> <tt class="py-line"><tt class="py-docstring"> X VERBOSE Ignore whitespace and comments for nicer looking RE's.</tt> </tt>
<a name="L90"></a><tt class="py-lineno"> 90</tt> <tt class="py-line"><tt class="py-docstring"> U UNICODE Make \w, \W, \b, \B, dependent on the Unicode locale.</tt> </tt>
<a name="L91"></a><tt class="py-lineno"> 91</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L92"></a><tt class="py-lineno"> 92</tt> <tt class="py-line"><tt class="py-docstring">This module also defines an exception 'error'.</tt> </tt>
<a name="L93"></a><tt class="py-lineno"> 93</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L94"></a><tt class="py-lineno"> 94</tt> <tt class="py-line"><tt class="py-docstring">"""</tt> </tt>
<a name="L95"></a><tt class="py-lineno"> 95</tt> <tt class="py-line"> </tt>
<a name="L96"></a><tt class="py-lineno"> 96</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">sys</tt> </tt>
<a name="L97"></a><tt class="py-lineno"> 97</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">sre_compile</tt> </tt>
<a name="L98"></a><tt class="py-lineno"> 98</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">sre_parse</tt> </tt>
<a name="L99"></a><tt class="py-lineno"> 99</tt> <tt class="py-line"> </tt>
<a name="L100"></a><tt class="py-lineno">100</tt> <tt class="py-line"><tt class="py-comment"># public symbols</tt> </tt>
<a name="L101"></a><tt class="py-lineno">101</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-name">__all__</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt> <tt class="py-string">"match"</tt><tt class="py-op">,</tt> <tt class="py-string">"search"</tt><tt class="py-op">,</tt> <tt class="py-string">"sub"</tt><tt class="py-op">,</tt> <tt class="py-string">"subn"</tt><tt class="py-op">,</tt> <tt class="py-string">"split"</tt><tt class="py-op">,</tt> <tt class="py-string">"findall"</tt><tt class="py-op">,</tt> </tt>
<a name="L102"></a><tt class="py-lineno">102</tt> <tt class="py-line"> <tt class="py-string">"compile"</tt><tt class="py-op">,</tt> <tt class="py-string">"purge"</tt><tt class="py-op">,</tt> <tt class="py-string">"template"</tt><tt class="py-op">,</tt> <tt class="py-string">"escape"</tt><tt class="py-op">,</tt> <tt class="py-string">"I"</tt><tt class="py-op">,</tt> <tt class="py-string">"L"</tt><tt class="py-op">,</tt> <tt class="py-string">"M"</tt><tt class="py-op">,</tt> <tt class="py-string">"S"</tt><tt class="py-op">,</tt> <tt class="py-string">"X"</tt><tt class="py-op">,</tt> </tt>
<a name="L103"></a><tt class="py-lineno">103</tt> <tt class="py-line"> <tt class="py-string">"U"</tt><tt class="py-op">,</tt> <tt class="py-string">"IGNORECASE"</tt><tt class="py-op">,</tt> <tt class="py-string">"LOCALE"</tt><tt class="py-op">,</tt> <tt class="py-string">"MULTILINE"</tt><tt class="py-op">,</tt> <tt class="py-string">"DOTALL"</tt><tt class="py-op">,</tt> <tt class="py-string">"VERBOSE"</tt><tt class="py-op">,</tt> </tt>
<a name="L104"></a><tt class="py-lineno">104</tt> <tt class="py-line"> <tt class="py-string">"UNICODE"</tt><tt class="py-op">,</tt> <tt class="py-string">"error"</tt> <tt class="py-op">]</tt> </tt>
<a name="L105"></a><tt class="py-lineno">105</tt> <tt class="py-line"> </tt>
<a name="L106"></a><tt class="py-lineno">106</tt> <tt class="py-line"><tt class="py-name">__version__</tt> <tt class="py-op">=</tt> <tt class="py-string">"2.2.1"</tt> </tt>
<a name="L107"></a><tt class="py-lineno">107</tt> <tt class="py-line"> </tt>
<a name="L108"></a><tt class="py-lineno">108</tt> <tt class="py-line"><tt class="py-comment"># flags</tt> </tt>
<a name="L109"></a><tt class="py-lineno">109</tt> <tt class="py-line"><tt class="py-comment"></tt><tt id="link-0" class="py-name" targets="Variable sre.I=sre-module.html#I"><a title="sre.I" class="py-name" href="#" onclick="return doclink('link-0', 'I', 'link-0');">I</a></tt> <tt class="py-op">=</tt> <tt id="link-1" class="py-name" targets="Variable sre.IGNORECASE=sre-module.html#IGNORECASE"><a title="sre.IGNORECASE" class="py-name" href="#" onclick="return doclink('link-1', 'IGNORECASE', 'link-1');">IGNORECASE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_IGNORECASE</tt> <tt class="py-comment"># ignore case</tt> </tt>
<a name="L110"></a><tt class="py-lineno">110</tt> <tt class="py-line"><tt id="link-2" class="py-name" targets="Variable sre.L=sre-module.html#L"><a title="sre.L" class="py-name" href="#" onclick="return doclink('link-2', 'L', 'link-2');">L</a></tt> <tt class="py-op">=</tt> <tt id="link-3" class="py-name" targets="Variable sre.LOCALE=sre-module.html#LOCALE"><a title="sre.LOCALE" class="py-name" href="#" onclick="return doclink('link-3', 'LOCALE', 'link-3');">LOCALE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_LOCALE</tt> <tt class="py-comment"># assume current 8-bit locale</tt> </tt>
<a name="L111"></a><tt class="py-lineno">111</tt> <tt class="py-line"><tt id="link-4" class="py-name" targets="Variable sre.U=sre-module.html#U"><a title="sre.U" class="py-name" href="#" onclick="return doclink('link-4', 'U', 'link-4');">U</a></tt> <tt class="py-op">=</tt> <tt id="link-5" class="py-name" targets="Variable sre.UNICODE=sre-module.html#UNICODE"><a title="sre.UNICODE" class="py-name" href="#" onclick="return doclink('link-5', 'UNICODE', 'link-5');">UNICODE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_UNICODE</tt> <tt class="py-comment"># assume unicode locale</tt> </tt>
<a name="L112"></a><tt class="py-lineno">112</tt> <tt class="py-line"><tt id="link-6" class="py-name" targets="Variable sre.M=sre-module.html#M"><a title="sre.M" class="py-name" href="#" onclick="return doclink('link-6', 'M', 'link-6');">M</a></tt> <tt class="py-op">=</tt> <tt id="link-7" class="py-name" targets="Variable sre.MULTILINE=sre-module.html#MULTILINE"><a title="sre.MULTILINE" class="py-name" href="#" onclick="return doclink('link-7', 'MULTILINE', 'link-7');">MULTILINE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_MULTILINE</tt> <tt class="py-comment"># make anchors look for newline</tt> </tt>
<a name="L113"></a><tt class="py-lineno">113</tt> <tt class="py-line"><tt id="link-8" class="py-name" targets="Variable sre.S=sre-module.html#S"><a title="sre.S" class="py-name" href="#" onclick="return doclink('link-8', 'S', 'link-8');">S</a></tt> <tt class="py-op">=</tt> <tt id="link-9" class="py-name" targets="Variable sre.DOTALL=sre-module.html#DOTALL"><a title="sre.DOTALL" class="py-name" href="#" onclick="return doclink('link-9', 'DOTALL', 'link-9');">DOTALL</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_DOTALL</tt> <tt class="py-comment"># make dot match newline</tt> </tt>
<a name="L114"></a><tt class="py-lineno">114</tt> <tt class="py-line"><tt id="link-10" class="py-name" targets="Variable sre.X=sre-module.html#X"><a title="sre.X" class="py-name" href="#" onclick="return doclink('link-10', 'X', 'link-10');">X</a></tt> <tt class="py-op">=</tt> <tt id="link-11" class="py-name" targets="Variable sre.VERBOSE=sre-module.html#VERBOSE"><a title="sre.VERBOSE" class="py-name" href="#" onclick="return doclink('link-11', 'VERBOSE', 'link-11');">VERBOSE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_VERBOSE</tt> <tt class="py-comment"># ignore whitespace and comments</tt> </tt>
<a name="L115"></a><tt class="py-lineno">115</tt> <tt class="py-line"> </tt>
<a name="L116"></a><tt class="py-lineno">116</tt> <tt class="py-line"><tt class="py-comment"># sre extensions (experimental, don't rely on these)</tt> </tt>
<a name="L117"></a><tt class="py-lineno">117</tt> <tt class="py-line"><tt class="py-comment"></tt><tt id="link-12" class="py-name" targets="Variable sre.T=sre-module.html#T"><a title="sre.T" class="py-name" href="#" onclick="return doclink('link-12', 'T', 'link-12');">T</a></tt> <tt class="py-op">=</tt> <tt id="link-13" class="py-name" targets="Variable sre.TEMPLATE=sre-module.html#TEMPLATE"><a title="sre.TEMPLATE" class="py-name" href="#" onclick="return doclink('link-13', 'TEMPLATE', 'link-13');">TEMPLATE</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_TEMPLATE</tt> <tt class="py-comment"># disable backtracking</tt> </tt>
<a name="L118"></a><tt class="py-lineno">118</tt> <tt class="py-line"><tt id="link-14" class="py-name" targets="Variable sre.DEBUG=sre-module.html#DEBUG"><a title="sre.DEBUG" class="py-name" href="#" onclick="return doclink('link-14', 'DEBUG', 'link-14');">DEBUG</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">SRE_FLAG_DEBUG</tt> <tt class="py-comment"># dump pattern after compilation</tt> </tt>
<a name="L119"></a><tt class="py-lineno">119</tt> <tt class="py-line"> </tt>
<a name="L120"></a><tt class="py-lineno">120</tt> <tt class="py-line"><tt class="py-comment"># sre exception</tt> </tt>
<a name="L121"></a><tt class="py-lineno">121</tt> <tt class="py-line"><tt class="py-comment"></tt><tt id="link-15" class="py-name" targets="Class sre_constants.error=sre_constants.error-class.html"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-15', 'error', 'link-15');">error</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt id="link-16" class="py-name"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-16', 'error', 'link-15');">error</a></tt> </tt>
<a name="L122"></a><tt class="py-lineno">122</tt> <tt class="py-line"> </tt>
<a name="L123"></a><tt class="py-lineno">123</tt> <tt class="py-line"><tt class="py-comment"># --------------------------------------------------------------------</tt> </tt>
<a name="L124"></a><tt class="py-lineno">124</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># public interface</tt> </tt>
<a name="L125"></a><tt class="py-lineno">125</tt> <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="match"></a><div id="match-def"><a name="L126"></a><tt class="py-lineno">126</tt> <a class="py-toggle" href="#" id="match-toggle" onclick="return toggle('match');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#match">match</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="match-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="match-expanded"><a name="L127"></a><tt class="py-lineno">127</tt> <tt class="py-line"> <tt class="py-docstring">"""Try to apply the pattern at the start of the string, returning</tt> </tt>
<a name="L128"></a><tt class="py-lineno">128</tt> <tt class="py-line"><tt class="py-docstring"> a match object, or None if no match was found."""</tt> </tt>
<a name="L129"></a><tt class="py-lineno">129</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-17" class="py-name" targets="Function sre._compile()=sre-module.html#_compile"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-17', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-18" class="py-name" targets="Function sre.match()=sre-module.html#match"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-18', 'match', 'link-18');">match</a></tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">)</tt> </tt>
</div><a name="L130"></a><tt class="py-lineno">130</tt> <tt class="py-line"> </tt>
<a name="search"></a><div id="search-def"><a name="L131"></a><tt class="py-lineno">131</tt> <a class="py-toggle" href="#" id="search-toggle" onclick="return toggle('search');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#search">search</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="search-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="search-expanded"><a name="L132"></a><tt class="py-lineno">132</tt> <tt class="py-line"> <tt class="py-docstring">"""Scan through string looking for a match to the pattern, returning</tt> </tt>
<a name="L133"></a><tt class="py-lineno">133</tt> <tt class="py-line"><tt class="py-docstring"> a match object, or None if no match was found."""</tt> </tt>
<a name="L134"></a><tt class="py-lineno">134</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-19" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-19', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-20" class="py-name" targets="Function sre.search()=sre-module.html#search"><a title="sre.search" class="py-name" href="#" onclick="return doclink('link-20', 'search', 'link-20');">search</a></tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">)</tt> </tt>
</div><a name="L135"></a><tt class="py-lineno">135</tt> <tt class="py-line"> </tt>
<a name="sub"></a><div id="sub-def"><a name="L136"></a><tt class="py-lineno">136</tt> <a class="py-toggle" href="#" id="sub-toggle" onclick="return toggle('sub');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#sub">sub</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">repl</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">count</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="sub-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="sub-expanded"><a name="L137"></a><tt class="py-lineno">137</tt> <tt class="py-line"> <tt class="py-docstring">"""Return the string obtained by replacing the leftmost</tt> </tt>
<a name="L138"></a><tt class="py-lineno">138</tt> <tt class="py-line"><tt class="py-docstring"> non-overlapping occurrences of the pattern in string by the</tt> </tt>
<a name="L139"></a><tt class="py-lineno">139</tt> <tt class="py-line"><tt class="py-docstring"> replacement repl. repl can be either a string or a callable;</tt> </tt>
<a name="L140"></a><tt class="py-lineno">140</tt> <tt class="py-line"><tt class="py-docstring"> if a callable, it's passed the match object and must return</tt> </tt>
<a name="L141"></a><tt class="py-lineno">141</tt> <tt class="py-line"><tt class="py-docstring"> a replacement string to be used."""</tt> </tt>
<a name="L142"></a><tt class="py-lineno">142</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-21" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-21', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-22" class="py-name" targets="Function sre.sub()=sre-module.html#sub"><a title="sre.sub" class="py-name" href="#" onclick="return doclink('link-22', 'sub', 'link-22');">sub</a></tt><tt class="py-op">(</tt><tt class="py-name">repl</tt><tt class="py-op">,</tt> <tt class="py-name">string</tt><tt class="py-op">,</tt> <tt class="py-name">count</tt><tt class="py-op">)</tt> </tt>
</div><a name="L143"></a><tt class="py-lineno">143</tt> <tt class="py-line"> </tt>
<a name="subn"></a><div id="subn-def"><a name="L144"></a><tt class="py-lineno">144</tt> <a class="py-toggle" href="#" id="subn-toggle" onclick="return toggle('subn');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#subn">subn</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">repl</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">count</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="subn-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="subn-expanded"><a name="L145"></a><tt class="py-lineno">145</tt> <tt class="py-line"> <tt class="py-docstring">"""Return a 2-tuple containing (new_string, number).</tt> </tt>
<a name="L146"></a><tt class="py-lineno">146</tt> <tt class="py-line"><tt class="py-docstring"> new_string is the string obtained by replacing the leftmost</tt> </tt>
<a name="L147"></a><tt class="py-lineno">147</tt> <tt class="py-line"><tt class="py-docstring"> non-overlapping occurrences of the pattern in the source</tt> </tt>
<a name="L148"></a><tt class="py-lineno">148</tt> <tt class="py-line"><tt class="py-docstring"> string by the replacement repl. number is the number of</tt> </tt>
<a name="L149"></a><tt class="py-lineno">149</tt> <tt class="py-line"><tt class="py-docstring"> substitutions that were made. repl can be either a string or a</tt> </tt>
<a name="L150"></a><tt class="py-lineno">150</tt> <tt class="py-line"><tt class="py-docstring"> callable; if a callable, it's passed the match object and must</tt> </tt>
<a name="L151"></a><tt class="py-lineno">151</tt> <tt class="py-line"><tt class="py-docstring"> return a replacement string to be used."""</tt> </tt>
<a name="L152"></a><tt class="py-lineno">152</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-23" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-23', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-24" class="py-name" targets="Function sre.subn()=sre-module.html#subn"><a title="sre.subn" class="py-name" href="#" onclick="return doclink('link-24', 'subn', 'link-24');">subn</a></tt><tt class="py-op">(</tt><tt class="py-name">repl</tt><tt class="py-op">,</tt> <tt class="py-name">string</tt><tt class="py-op">,</tt> <tt class="py-name">count</tt><tt class="py-op">)</tt> </tt>
</div><a name="L153"></a><tt class="py-lineno">153</tt> <tt class="py-line"> </tt>
<a name="split"></a><div id="split-def"><a name="L154"></a><tt class="py-lineno">154</tt> <a class="py-toggle" href="#" id="split-toggle" onclick="return toggle('split');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#split">split</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">maxsplit</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="split-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="split-expanded"><a name="L155"></a><tt class="py-lineno">155</tt> <tt class="py-line"> <tt class="py-docstring">"""Split the source string by the occurrences of the pattern,</tt> </tt>
<a name="L156"></a><tt class="py-lineno">156</tt> <tt class="py-line"><tt class="py-docstring"> returning a list containing the resulting substrings."""</tt> </tt>
<a name="L157"></a><tt class="py-lineno">157</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-25" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-25', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-26" class="py-name" targets="Function sre.split()=sre-module.html#split"><a title="sre.split" class="py-name" href="#" onclick="return doclink('link-26', 'split', 'link-26');">split</a></tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">,</tt> <tt class="py-name">maxsplit</tt><tt class="py-op">)</tt> </tt>
</div><a name="L158"></a><tt class="py-lineno">158</tt> <tt class="py-line"> </tt>
<a name="findall"></a><div id="findall-def"><a name="L159"></a><tt class="py-lineno">159</tt> <a class="py-toggle" href="#" id="findall-toggle" onclick="return toggle('findall');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#findall">findall</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="findall-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="findall-expanded"><a name="L160"></a><tt class="py-lineno">160</tt> <tt class="py-line"> <tt class="py-docstring">"""Return a list of all non-overlapping matches in the string.</tt> </tt>
<a name="L161"></a><tt class="py-lineno">161</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L162"></a><tt class="py-lineno">162</tt> <tt class="py-line"><tt class="py-docstring"> If one or more groups are present in the pattern, return a</tt> </tt>
<a name="L163"></a><tt class="py-lineno">163</tt> <tt class="py-line"><tt class="py-docstring"> list of groups; this will be a list of tuples if the pattern</tt> </tt>
<a name="L164"></a><tt class="py-lineno">164</tt> <tt class="py-line"><tt class="py-docstring"> has more than one group.</tt> </tt>
<a name="L165"></a><tt class="py-lineno">165</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L166"></a><tt class="py-lineno">166</tt> <tt class="py-line"><tt class="py-docstring"> Empty matches are included in the result."""</tt> </tt>
<a name="L167"></a><tt class="py-lineno">167</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-27" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-27', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-28" class="py-name" targets="Function sre.findall()=sre-module.html#findall"><a title="sre.findall" class="py-name" href="#" onclick="return doclink('link-28', 'findall', 'link-28');">findall</a></tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">)</tt> </tt>
</div><a name="L168"></a><tt class="py-lineno">168</tt> <tt class="py-line"> </tt>
<a name="L169"></a><tt class="py-lineno">169</tt> <tt class="py-line"><tt class="py-keyword">if</tt> <tt class="py-name">sys</tt><tt class="py-op">.</tt><tt class="py-name">hexversion</tt> <tt class="py-op">>=</tt> <tt class="py-number">0x02020000</tt><tt class="py-op">:</tt> </tt>
<a name="L170"></a><tt class="py-lineno">170</tt> <tt class="py-line"> <tt class="py-name">__all__</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-string">"finditer"</tt><tt class="py-op">)</tt> </tt>
<a name="finditer"></a><div id="finditer-def"><a name="L171"></a><tt class="py-lineno">171</tt> <a class="py-toggle" href="#" id="finditer-toggle" onclick="return toggle('finditer');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#finditer">finditer</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="finditer-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="finditer-expanded"><a name="L172"></a><tt class="py-lineno">172</tt> <tt class="py-line"> <tt class="py-docstring">"""Return an iterator over all non-overlapping matches in the</tt> </tt>
<a name="L173"></a><tt class="py-lineno">173</tt> <tt class="py-line"><tt class="py-docstring"> string. For each match, the iterator returns a match object.</tt> </tt>
<a name="L174"></a><tt class="py-lineno">174</tt> <tt class="py-line"><tt class="py-docstring"></tt> </tt>
<a name="L175"></a><tt class="py-lineno">175</tt> <tt class="py-line"><tt class="py-docstring"> Empty matches are included in the result."""</tt> </tt>
<a name="L176"></a><tt class="py-lineno">176</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-29" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-29', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-30" class="py-name" targets="Function sre.finditer()=sre-module.html#finditer"><a title="sre.finditer" class="py-name" href="#" onclick="return doclink('link-30', 'finditer', 'link-30');">finditer</a></tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">)</tt> </tt>
</div><a name="L177"></a><tt class="py-lineno">177</tt> <tt class="py-line"> </tt>
<a name="compile"></a><div id="compile-def"><a name="L178"></a><tt class="py-lineno">178</tt> <a class="py-toggle" href="#" id="compile-toggle" onclick="return toggle('compile');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#compile">compile</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="compile-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="compile-expanded"><a name="L179"></a><tt class="py-lineno">179</tt> <tt class="py-line"> <tt class="py-docstring">"Compile a regular expression pattern, returning a pattern object."</tt> </tt>
<a name="L180"></a><tt class="py-lineno">180</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-31" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-31', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt> </tt>
</div><a name="L181"></a><tt class="py-lineno">181</tt> <tt class="py-line"> </tt>
<a name="purge"></a><div id="purge-def"><a name="L182"></a><tt class="py-lineno">182</tt> <a class="py-toggle" href="#" id="purge-toggle" onclick="return toggle('purge');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#purge">purge</a><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="purge-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="purge-expanded"><a name="L183"></a><tt class="py-lineno">183</tt> <tt class="py-line"> <tt class="py-docstring">"Clear the regular expression cache"</tt> </tt>
<a name="L184"></a><tt class="py-lineno">184</tt> <tt class="py-line"> <tt id="link-32" class="py-name" targets="Variable sre._cache=sre-module.html#_cache"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-32', '_cache', 'link-32');">_cache</a></tt><tt class="py-op">.</tt><tt class="py-name">clear</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L185"></a><tt class="py-lineno">185</tt> <tt class="py-line"> <tt id="link-33" class="py-name" targets="Variable sre._cache_repl=sre-module.html#_cache_repl"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-33', '_cache_repl', 'link-33');">_cache_repl</a></tt><tt class="py-op">.</tt><tt class="py-name">clear</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
</div><a name="L186"></a><tt class="py-lineno">186</tt> <tt class="py-line"> </tt>
<a name="template"></a><div id="template-def"><a name="L187"></a><tt class="py-lineno">187</tt> <a class="py-toggle" href="#" id="template-toggle" onclick="return toggle('template');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#template">template</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="template-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="template-expanded"><a name="L188"></a><tt class="py-lineno">188</tt> <tt class="py-line"> <tt class="py-docstring">"Compile a template pattern, returning a pattern object"</tt> </tt>
<a name="L189"></a><tt class="py-lineno">189</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-34" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-34', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">|</tt><tt id="link-35" class="py-name"><a title="sre.T" class="py-name" href="#" onclick="return doclink('link-35', 'T', 'link-12');">T</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L190"></a><tt class="py-lineno">190</tt> <tt class="py-line"> </tt>
<a name="escape"></a><div id="escape-def"><a name="L191"></a><tt class="py-lineno">191</tt> <a class="py-toggle" href="#" id="escape-toggle" onclick="return toggle('escape');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#escape">escape</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="escape-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="escape-expanded"><a name="L192"></a><tt class="py-lineno">192</tt> <tt class="py-line"> <tt class="py-docstring">"Escape all non-alphanumeric characters in pattern."</tt> </tt>
<a name="L193"></a><tt class="py-lineno">193</tt> <tt class="py-line"> <tt class="py-name">s</tt> <tt class="py-op">=</tt> <tt class="py-name">list</tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">)</tt> </tt>
<a name="L194"></a><tt class="py-lineno">194</tt> <tt class="py-line"> <tt class="py-keyword">for</tt> <tt class="py-name">i</tt> <tt class="py-keyword">in</tt> <tt class="py-name">range</tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L195"></a><tt class="py-lineno">195</tt> <tt class="py-line"> <tt class="py-name">c</tt> <tt class="py-op">=</tt> <tt class="py-name">pattern</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> </tt>
<a name="L196"></a><tt class="py-lineno">196</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-op">(</tt><tt class="py-string">"a"</tt> <tt class="py-op"><=</tt> <tt class="py-name">c</tt> <tt class="py-op"><=</tt> <tt class="py-string">"z"</tt> <tt class="py-keyword">or</tt> <tt class="py-string">"A"</tt> <tt class="py-op"><=</tt> <tt class="py-name">c</tt> <tt class="py-op"><=</tt> <tt class="py-string">"Z"</tt> <tt class="py-keyword">or</tt> <tt class="py-string">"0"</tt> <tt class="py-op"><=</tt> <tt class="py-name">c</tt> <tt class="py-op"><=</tt> <tt class="py-string">"9"</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L197"></a><tt class="py-lineno">197</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">c</tt> <tt class="py-op">==</tt> <tt class="py-string">"\000"</tt><tt class="py-op">:</tt> </tt>
<a name="L198"></a><tt class="py-lineno">198</tt> <tt class="py-line"> <tt class="py-name">s</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-string">"\\000"</tt> </tt>
<a name="L199"></a><tt class="py-lineno">199</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt>
<a name="L200"></a><tt class="py-lineno">200</tt> <tt class="py-line"> <tt class="py-name">s</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-string">"\\"</tt> <tt class="py-op">+</tt> <tt class="py-name">c</tt> </tt>
<a name="L201"></a><tt class="py-lineno">201</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">pattern</tt><tt class="py-op">[</tt><tt class="py-op">:</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">.</tt><tt class="py-name">join</tt><tt class="py-op">(</tt><tt class="py-name">s</tt><tt class="py-op">)</tt> </tt>
</div><a name="L202"></a><tt class="py-lineno">202</tt> <tt class="py-line"> </tt>
<a name="L203"></a><tt class="py-lineno">203</tt> <tt class="py-line"><tt class="py-comment"># --------------------------------------------------------------------</tt> </tt>
<a name="L204"></a><tt class="py-lineno">204</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># internals</tt> </tt>
<a name="L205"></a><tt class="py-lineno">205</tt> <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="L206"></a><tt class="py-lineno">206</tt> <tt class="py-line"><tt id="link-36" class="py-name"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-36', '_cache', 'link-32');">_cache</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L207"></a><tt class="py-lineno">207</tt> <tt class="py-line"><tt id="link-37" class="py-name"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-37', '_cache_repl', 'link-33');">_cache_repl</a></tt> <tt class="py-op">=</tt> <tt class="py-op">{</tt><tt class="py-op">}</tt> </tt>
<a name="L208"></a><tt class="py-lineno">208</tt> <tt class="py-line"> </tt>
<a name="L209"></a><tt class="py-lineno">209</tt> <tt class="py-line"><tt class="py-name">_pattern_type</tt> <tt class="py-op">=</tt> <tt class="py-name">type</tt><tt class="py-op">(</tt><tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt id="link-38" class="py-name" targets="Function sre.compile()=sre-module.html#compile"><a title="sre.compile" class="py-name" href="#" onclick="return doclink('link-38', 'compile', 'link-38');">compile</a></tt><tt class="py-op">(</tt><tt class="py-string">""</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L210"></a><tt class="py-lineno">210</tt> <tt class="py-line"> </tt>
<a name="L211"></a><tt class="py-lineno">211</tt> <tt class="py-line"><tt id="link-39" class="py-name" targets="Variable sre._MAXCACHE=sre-module.html#_MAXCACHE"><a title="sre._MAXCACHE" class="py-name" href="#" onclick="return doclink('link-39', '_MAXCACHE', 'link-39');">_MAXCACHE</a></tt> <tt class="py-op">=</tt> <tt class="py-number">100</tt> </tt>
<a name="L212"></a><tt class="py-lineno">212</tt> <tt class="py-line"> </tt>
<a name="_compile"></a><div id="_compile-def"><a name="L213"></a><tt class="py-lineno">213</tt> <a class="py-toggle" href="#" id="_compile-toggle" onclick="return toggle('_compile');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#_compile">_compile</a><tt class="py-op">(</tt><tt class="py-op">*</tt><tt class="py-param">key</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_compile-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_compile-expanded"><a name="L214"></a><tt class="py-lineno">214</tt> <tt class="py-line"> <tt class="py-comment"># internal: compile pattern</tt> </tt>
<a name="L215"></a><tt class="py-lineno">215</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt class="py-name">cachekey</tt> <tt class="py-op">=</tt> <tt class="py-op">(</tt><tt class="py-name">type</tt><tt class="py-op">(</tt><tt class="py-name">key</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">,</tt><tt class="py-op">)</tt> <tt class="py-op">+</tt> <tt class="py-name">key</tt> </tt>
<a name="L216"></a><tt class="py-lineno">216</tt> <tt class="py-line"> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt id="link-40" class="py-name"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-40', '_cache', 'link-32');">_cache</a></tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">cachekey</tt><tt class="py-op">)</tt> </tt>
<a name="L217"></a><tt class="py-lineno">217</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">p</tt> <tt class="py-keyword">is</tt> <tt class="py-keyword">not</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L218"></a><tt class="py-lineno">218</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">p</tt> </tt>
<a name="L219"></a><tt class="py-lineno">219</tt> <tt class="py-line"> <tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt> <tt class="py-op">=</tt> <tt class="py-name">key</tt> </tt>
<a name="L220"></a><tt class="py-lineno">220</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">_pattern_type</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L221"></a><tt class="py-lineno">221</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">pattern</tt> </tt>
<a name="L222"></a><tt class="py-lineno">222</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt class="py-name">isstring</tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L223"></a><tt class="py-lineno">223</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt class="py-name">TypeError</tt><tt class="py-op">,</tt> <tt class="py-string">"first argument must be string or compiled pattern"</tt> </tt>
<a name="L224"></a><tt class="py-lineno">224</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L225"></a><tt class="py-lineno">225</tt> <tt class="py-line"> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt id="link-41" class="py-name"><a title="sre.compile" class="py-name" href="#" onclick="return doclink('link-41', 'compile', 'link-38');">compile</a></tt><tt class="py-op">(</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt> </tt>
<a name="L226"></a><tt class="py-lineno">226</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt id="link-42" class="py-name"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-42', 'error', 'link-15');">error</a></tt><tt class="py-op">,</tt> <tt class="py-name">v</tt><tt class="py-op">:</tt> </tt>
<a name="L227"></a><tt class="py-lineno">227</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt id="link-43" class="py-name"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-43', 'error', 'link-15');">error</a></tt><tt class="py-op">,</tt> <tt class="py-name">v</tt> <tt class="py-comment"># invalid expression</tt> </tt>
<a name="L228"></a><tt class="py-lineno">228</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt id="link-44" class="py-name"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-44', '_cache', 'link-32');">_cache</a></tt><tt class="py-op">)</tt> <tt class="py-op">>=</tt> <tt id="link-45" class="py-name"><a title="sre._MAXCACHE" class="py-name" href="#" onclick="return doclink('link-45', '_MAXCACHE', 'link-39');">_MAXCACHE</a></tt><tt class="py-op">:</tt> </tt>
<a name="L229"></a><tt class="py-lineno">229</tt> <tt class="py-line"> <tt id="link-46" class="py-name"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-46', '_cache', 'link-32');">_cache</a></tt><tt class="py-op">.</tt><tt class="py-name">clear</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L230"></a><tt class="py-lineno">230</tt> <tt class="py-line"> <tt id="link-47" class="py-name"><a title="sre._cache" class="py-name" href="#" onclick="return doclink('link-47', '_cache', 'link-32');">_cache</a></tt><tt class="py-op">[</tt><tt class="py-name">cachekey</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">p</tt> </tt>
<a name="L231"></a><tt class="py-lineno">231</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">p</tt> </tt>
</div><a name="L232"></a><tt class="py-lineno">232</tt> <tt class="py-line"> </tt>
<a name="_compile_repl"></a><div id="_compile_repl-def"><a name="L233"></a><tt class="py-lineno">233</tt> <a class="py-toggle" href="#" id="_compile_repl-toggle" onclick="return toggle('_compile_repl');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#_compile_repl">_compile_repl</a><tt class="py-op">(</tt><tt class="py-op">*</tt><tt class="py-param">key</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_compile_repl-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_compile_repl-expanded"><a name="L234"></a><tt class="py-lineno">234</tt> <tt class="py-line"> <tt class="py-comment"># internal: compile replacement pattern</tt> </tt>
<a name="L235"></a><tt class="py-lineno">235</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt id="link-48" class="py-name"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-48', '_cache_repl', 'link-33');">_cache_repl</a></tt><tt class="py-op">.</tt><tt class="py-name">get</tt><tt class="py-op">(</tt><tt class="py-name">key</tt><tt class="py-op">)</tt> </tt>
<a name="L236"></a><tt class="py-lineno">236</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">p</tt> <tt class="py-keyword">is</tt> <tt class="py-keyword">not</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L237"></a><tt class="py-lineno">237</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">p</tt> </tt>
<a name="L238"></a><tt class="py-lineno">238</tt> <tt class="py-line"> <tt class="py-name">repl</tt><tt class="py-op">,</tt> <tt class="py-name">pattern</tt> <tt class="py-op">=</tt> <tt class="py-name">key</tt> </tt>
<a name="L239"></a><tt class="py-lineno">239</tt> <tt class="py-line"> <tt class="py-keyword">try</tt><tt class="py-op">:</tt> </tt>
<a name="L240"></a><tt class="py-lineno">240</tt> <tt class="py-line"> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">parse_template</tt><tt class="py-op">(</tt><tt class="py-name">repl</tt><tt class="py-op">,</tt> <tt class="py-name">pattern</tt><tt class="py-op">)</tt> </tt>
<a name="L241"></a><tt class="py-lineno">241</tt> <tt class="py-line"> <tt class="py-keyword">except</tt> <tt id="link-49" class="py-name"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-49', 'error', 'link-15');">error</a></tt><tt class="py-op">,</tt> <tt class="py-name">v</tt><tt class="py-op">:</tt> </tt>
<a name="L242"></a><tt class="py-lineno">242</tt> <tt class="py-line"> <tt class="py-keyword">raise</tt> <tt id="link-50" class="py-name"><a title="sre_constants.error" class="py-name" href="#" onclick="return doclink('link-50', 'error', 'link-15');">error</a></tt><tt class="py-op">,</tt> <tt class="py-name">v</tt> <tt class="py-comment"># invalid expression</tt> </tt>
<a name="L243"></a><tt class="py-lineno">243</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt id="link-51" class="py-name"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-51', '_cache_repl', 'link-33');">_cache_repl</a></tt><tt class="py-op">)</tt> <tt class="py-op">>=</tt> <tt id="link-52" class="py-name"><a title="sre._MAXCACHE" class="py-name" href="#" onclick="return doclink('link-52', '_MAXCACHE', 'link-39');">_MAXCACHE</a></tt><tt class="py-op">:</tt> </tt>
<a name="L244"></a><tt class="py-lineno">244</tt> <tt class="py-line"> <tt id="link-53" class="py-name"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-53', '_cache_repl', 'link-33');">_cache_repl</a></tt><tt class="py-op">.</tt><tt class="py-name">clear</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L245"></a><tt class="py-lineno">245</tt> <tt class="py-line"> <tt id="link-54" class="py-name"><a title="sre._cache_repl" class="py-name" href="#" onclick="return doclink('link-54', '_cache_repl', 'link-33');">_cache_repl</a></tt><tt class="py-op">[</tt><tt class="py-name">key</tt><tt class="py-op">]</tt> <tt class="py-op">=</tt> <tt class="py-name">p</tt> </tt>
<a name="L246"></a><tt class="py-lineno">246</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">p</tt> </tt>
</div><a name="L247"></a><tt class="py-lineno">247</tt> <tt class="py-line"> </tt>
<a name="_expand"></a><div id="_expand-def"><a name="L248"></a><tt class="py-lineno">248</tt> <a class="py-toggle" href="#" id="_expand-toggle" onclick="return toggle('_expand');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#_expand">_expand</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">match</tt><tt class="py-op">,</tt> <tt class="py-param">template</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_expand-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_expand-expanded"><a name="L249"></a><tt class="py-lineno">249</tt> <tt class="py-line"> <tt class="py-comment"># internal: match.expand implementation hook</tt> </tt>
<a name="L250"></a><tt class="py-lineno">250</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt id="link-55" class="py-name" targets="Function sre.template()=sre-module.html#template"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-55', 'template', 'link-55');">template</a></tt> <tt class="py-op">=</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">parse_template</tt><tt class="py-op">(</tt><tt id="link-56" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-56', 'template', 'link-55');">template</a></tt><tt class="py-op">,</tt> <tt class="py-name">pattern</tt><tt class="py-op">)</tt> </tt>
<a name="L251"></a><tt class="py-lineno">251</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">expand_template</tt><tt class="py-op">(</tt><tt id="link-57" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-57', 'template', 'link-55');">template</a></tt><tt class="py-op">,</tt> <tt id="link-58" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-58', 'match', 'link-18');">match</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L252"></a><tt class="py-lineno">252</tt> <tt class="py-line"> </tt>
<a name="_subx"></a><div id="_subx-def"><a name="L253"></a><tt class="py-lineno">253</tt> <a class="py-toggle" href="#" id="_subx-toggle" onclick="return toggle('_subx');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#_subx">_subx</a><tt class="py-op">(</tt><tt class="py-param">pattern</tt><tt class="py-op">,</tt> <tt class="py-param">template</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_subx-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_subx-expanded"><a name="L254"></a><tt class="py-lineno">254</tt> <tt class="py-line"> <tt class="py-comment"># internal: pattern.sub/subn implementation helper</tt> </tt>
<a name="L255"></a><tt class="py-lineno">255</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt id="link-59" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-59', 'template', 'link-55');">template</a></tt> <tt class="py-op">=</tt> <tt id="link-60" class="py-name" targets="Function sre._compile_repl()=sre-module.html#_compile_repl"><a title="sre._compile_repl" class="py-name" href="#" onclick="return doclink('link-60', '_compile_repl', 'link-60');">_compile_repl</a></tt><tt class="py-op">(</tt><tt id="link-61" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-61', 'template', 'link-55');">template</a></tt><tt class="py-op">,</tt> <tt class="py-name">pattern</tt><tt class="py-op">)</tt> </tt>
<a name="L256"></a><tt class="py-lineno">256</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt id="link-62" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-62', 'template', 'link-55');">template</a></tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> <tt class="py-keyword">and</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt id="link-63" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-63', 'template', 'link-55');">template</a></tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> <tt class="py-op">==</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L257"></a><tt class="py-lineno">257</tt> <tt class="py-line"> <tt class="py-comment"># literal replacement</tt> </tt>
<a name="L258"></a><tt class="py-lineno">258</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt class="py-keyword">return</tt> <tt id="link-64" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-64', 'template', 'link-55');">template</a></tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-number">0</tt><tt class="py-op">]</tt> </tt>
<a name="L259"></a><tt class="py-lineno">259</tt> <tt class="py-line"> <tt class="py-keyword">def</tt> <tt class="py-def-name">filter</tt><tt class="py-op">(</tt><tt class="py-param">match</tt><tt class="py-op">,</tt> <tt class="py-param">template</tt><tt class="py-op">=</tt><tt id="link-65" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-65', 'template', 'link-55');">template</a></tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L260"></a><tt class="py-lineno">260</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">expand_template</tt><tt class="py-op">(</tt><tt id="link-66" class="py-name"><a title="sre.template" class="py-name" href="#" onclick="return doclink('link-66', 'template', 'link-55');">template</a></tt><tt class="py-op">,</tt> <tt id="link-67" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-67', 'match', 'link-18');">match</a></tt><tt class="py-op">)</tt> </tt>
</div><a name="L261"></a><tt class="py-lineno">261</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">filter</tt> </tt>
</div><a name="L262"></a><tt class="py-lineno">262</tt> <tt class="py-line"> </tt>
<a name="L263"></a><tt class="py-lineno">263</tt> <tt class="py-line"><tt class="py-comment"># register myself for pickling</tt> </tt>
<a name="L264"></a><tt class="py-lineno">264</tt> <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="L265"></a><tt class="py-lineno">265</tt> <tt class="py-line"><tt class="py-keyword">import</tt> <tt class="py-name">copy_reg</tt> </tt>
<a name="L266"></a><tt class="py-lineno">266</tt> <tt class="py-line"> </tt>
<a name="_pickle"></a><div id="_pickle-def"><a name="L267"></a><tt class="py-lineno">267</tt> <a class="py-toggle" href="#" id="_pickle-toggle" onclick="return toggle('_pickle');">-</a><tt class="py-line"><tt class="py-keyword">def</tt> <a class="py-def-name" href="sre-module.html#_pickle">_pickle</a><tt class="py-op">(</tt><tt class="py-param">p</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="_pickle-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="_pickle-expanded"><a name="L268"></a><tt class="py-lineno">268</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-68" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-68', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">,</tt> <tt class="py-op">(</tt><tt class="py-name">p</tt><tt class="py-op">.</tt><tt class="py-name">pattern</tt><tt class="py-op">,</tt> <tt class="py-name">p</tt><tt class="py-op">.</tt><tt class="py-name">flags</tt><tt class="py-op">)</tt> </tt>
</div><a name="L269"></a><tt class="py-lineno">269</tt> <tt class="py-line"> </tt>
<a name="L270"></a><tt class="py-lineno">270</tt> <tt class="py-line"><tt class="py-name">copy_reg</tt><tt class="py-op">.</tt><tt class="py-name">pickle</tt><tt class="py-op">(</tt><tt class="py-name">_pattern_type</tt><tt class="py-op">,</tt> <tt id="link-69" class="py-name" targets="Function sre._pickle()=sre-module.html#_pickle"><a title="sre._pickle" class="py-name" href="#" onclick="return doclink('link-69', '_pickle', 'link-69');">_pickle</a></tt><tt class="py-op">,</tt> <tt id="link-70" class="py-name"><a title="sre._compile" class="py-name" href="#" onclick="return doclink('link-70', '_compile', 'link-17');">_compile</a></tt><tt class="py-op">)</tt> </tt>
<a name="L271"></a><tt class="py-lineno">271</tt> <tt class="py-line"> </tt>
<a name="L272"></a><tt class="py-lineno">272</tt> <tt class="py-line"><tt class="py-comment"># --------------------------------------------------------------------</tt> </tt>
<a name="L273"></a><tt class="py-lineno">273</tt> <tt class="py-line"><tt class="py-comment"></tt><tt class="py-comment"># experimental stuff (see python-dev discussions for details)</tt> </tt>
<a name="L274"></a><tt class="py-lineno">274</tt> <tt class="py-line"><tt class="py-comment"></tt> </tt>
<a name="Scanner"></a><div id="Scanner-def"><a name="L275"></a><tt class="py-lineno">275</tt> <a class="py-toggle" href="#" id="Scanner-toggle" onclick="return toggle('Scanner');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="sre.Scanner-class.html">Scanner</a><tt class="py-op">:</tt> </tt>
</div><div id="Scanner-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="Scanner-expanded"><a name="Scanner.__init__"></a><div id="Scanner.__init__-def"><a name="L276"></a><tt class="py-lineno">276</tt> <a class="py-toggle" href="#" id="Scanner.__init__-toggle" onclick="return toggle('Scanner.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="sre.Scanner-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">lexicon</tt><tt class="py-op">,</tt> <tt class="py-param">flags</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Scanner.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Scanner.__init__-expanded"><a name="L277"></a><tt class="py-lineno">277</tt> <tt class="py-line"> <tt class="py-keyword">from</tt> <tt class="py-name">sre_constants</tt> <tt class="py-keyword">import</tt> <tt class="py-name">BRANCH</tt><tt class="py-op">,</tt> <tt class="py-name">SUBPATTERN</tt> </tt>
<a name="L278"></a><tt class="py-lineno">278</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lexicon</tt> <tt class="py-op">=</tt> <tt class="py-name">lexicon</tt> </tt>
<a name="L279"></a><tt class="py-lineno">279</tt> <tt class="py-line"> <tt class="py-comment"># combine phrases into a compound pattern</tt> </tt>
<a name="L280"></a><tt class="py-lineno">280</tt> <tt class="py-line"><tt class="py-comment"></tt> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L281"></a><tt class="py-lineno">281</tt> <tt class="py-line"> <tt class="py-name">s</tt> <tt class="py-op">=</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">Pattern</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L282"></a><tt class="py-lineno">282</tt> <tt class="py-line"> <tt class="py-name">s</tt><tt class="py-op">.</tt><tt class="py-name">flags</tt> <tt class="py-op">=</tt> <tt class="py-name">flags</tt> </tt>
<a name="L283"></a><tt class="py-lineno">283</tt> <tt class="py-line"> <tt class="py-keyword">for</tt> <tt class="py-name">phrase</tt><tt class="py-op">,</tt> <tt class="py-name">action</tt> <tt class="py-keyword">in</tt> <tt class="py-name">lexicon</tt><tt class="py-op">:</tt> </tt>
<a name="L284"></a><tt class="py-lineno">284</tt> <tt class="py-line"> <tt class="py-name">p</tt><tt class="py-op">.</tt><tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">SubPattern</tt><tt class="py-op">(</tt><tt class="py-name">s</tt><tt class="py-op">,</tt> <tt class="py-op">[</tt> </tt>
<a name="L285"></a><tt class="py-lineno">285</tt> <tt class="py-line"> <tt class="py-op">(</tt><tt class="py-name">SUBPATTERN</tt><tt class="py-op">,</tt> <tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">p</tt><tt class="py-op">)</tt><tt class="py-op">+</tt><tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">parse</tt><tt class="py-op">(</tt><tt class="py-name">phrase</tt><tt class="py-op">,</tt> <tt class="py-name">flags</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">,</tt> </tt>
<a name="L286"></a><tt class="py-lineno">286</tt> <tt class="py-line"> <tt class="py-op">]</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L287"></a><tt class="py-lineno">287</tt> <tt class="py-line"> <tt class="py-name">p</tt> <tt class="py-op">=</tt> <tt class="py-name">sre_parse</tt><tt class="py-op">.</tt><tt class="py-name">SubPattern</tt><tt class="py-op">(</tt><tt class="py-name">s</tt><tt class="py-op">,</tt> <tt class="py-op">[</tt><tt class="py-op">(</tt><tt class="py-name">BRANCH</tt><tt class="py-op">,</tt> <tt class="py-op">(</tt><tt class="py-name">None</tt><tt class="py-op">,</tt> <tt class="py-name">p</tt><tt class="py-op">)</tt><tt class="py-op">)</tt><tt class="py-op">]</tt><tt class="py-op">)</tt> </tt>
<a name="L288"></a><tt class="py-lineno">288</tt> <tt class="py-line"> <tt class="py-name">s</tt><tt class="py-op">.</tt><tt class="py-name">groups</tt> <tt class="py-op">=</tt> <tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">p</tt><tt class="py-op">)</tt> </tt>
<a name="L289"></a><tt class="py-lineno">289</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">scanner</tt> <tt class="py-op">=</tt> <tt class="py-name">sre_compile</tt><tt class="py-op">.</tt><tt id="link-71" class="py-name"><a title="sre.compile" class="py-name" href="#" onclick="return doclink('link-71', 'compile', 'link-38');">compile</a></tt><tt class="py-op">(</tt><tt class="py-name">p</tt><tt class="py-op">)</tt> </tt>
</div><a name="Scanner.scan"></a><div id="Scanner.scan-def"><a name="L290"></a><tt class="py-lineno">290</tt> <a class="py-toggle" href="#" id="Scanner.scan-toggle" onclick="return toggle('Scanner.scan');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="sre.Scanner-class.html#scan">scan</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">string</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
</div><div id="Scanner.scan-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="Scanner.scan-expanded"><a name="L291"></a><tt class="py-lineno">291</tt> <tt class="py-line"> <tt class="py-name">result</tt> <tt class="py-op">=</tt> <tt class="py-op">[</tt><tt class="py-op">]</tt> </tt>
<a name="L292"></a><tt class="py-lineno">292</tt> <tt class="py-line"> <tt class="py-name">append</tt> <tt class="py-op">=</tt> <tt class="py-name">result</tt><tt class="py-op">.</tt><tt class="py-name">append</tt> </tt>
<a name="L293"></a><tt class="py-lineno">293</tt> <tt class="py-line"> <tt id="link-72" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-72', 'match', 'link-18');">match</a></tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">scanner</tt><tt class="py-op">.</tt><tt class="py-name">scanner</tt><tt class="py-op">(</tt><tt class="py-name">string</tt><tt class="py-op">)</tt><tt class="py-op">.</tt><tt id="link-73" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-73', 'match', 'link-18');">match</a></tt> </tt>
<a name="L294"></a><tt class="py-lineno">294</tt> <tt class="py-line"> <tt class="py-name">i</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt>
<a name="L295"></a><tt class="py-lineno">295</tt> <tt class="py-line"> <tt class="py-keyword">while</tt> <tt class="py-number">1</tt><tt class="py-op">:</tt> </tt>
<a name="L296"></a><tt class="py-lineno">296</tt> <tt class="py-line"> <tt class="py-name">m</tt> <tt class="py-op">=</tt> <tt id="link-74" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-74', 'match', 'link-18');">match</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L297"></a><tt class="py-lineno">297</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-keyword">not</tt> <tt class="py-name">m</tt><tt class="py-op">:</tt> </tt>
<a name="L298"></a><tt class="py-lineno">298</tt> <tt class="py-line"> <tt class="py-keyword">break</tt> </tt>
<a name="L299"></a><tt class="py-lineno">299</tt> <tt class="py-line"> <tt class="py-name">j</tt> <tt class="py-op">=</tt> <tt class="py-name">m</tt><tt class="py-op">.</tt><tt class="py-name">end</tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt>
<a name="L300"></a><tt class="py-lineno">300</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">i</tt> <tt class="py-op">==</tt> <tt class="py-name">j</tt><tt class="py-op">:</tt> </tt>
<a name="L301"></a><tt class="py-lineno">301</tt> <tt class="py-line"> <tt class="py-keyword">break</tt> </tt>
<a name="L302"></a><tt class="py-lineno">302</tt> <tt class="py-line"> <tt class="py-name">action</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">lexicon</tt><tt class="py-op">[</tt><tt class="py-name">m</tt><tt class="py-op">.</tt><tt class="py-name">lastindex</tt><tt class="py-op">-</tt><tt class="py-number">1</tt><tt class="py-op">]</tt><tt class="py-op">[</tt><tt class="py-number">1</tt><tt class="py-op">]</tt> </tt>
<a name="L303"></a><tt class="py-lineno">303</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">callable</tt><tt class="py-op">(</tt><tt class="py-name">action</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt>
<a name="L304"></a><tt class="py-lineno">304</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-75" class="py-name"><a title="sre.match" class="py-name" href="#" onclick="return doclink('link-75', 'match', 'link-18');">match</a></tt> <tt class="py-op">=</tt> <tt class="py-name">m</tt> </tt>
<a name="L305"></a><tt class="py-lineno">305</tt> <tt class="py-line"> <tt class="py-name">action</tt> <tt class="py-op">=</tt> <tt class="py-name">action</tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">,</tt> <tt class="py-name">m</tt><tt class="py-op">.</tt><tt class="py-name">group</tt><tt class="py-op">(</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt>
<a name="L306"></a><tt class="py-lineno">306</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">action</tt> <tt class="py-keyword">is</tt> <tt class="py-keyword">not</tt> <tt class="py-name">None</tt><tt class="py-op">:</tt> </tt>
<a name="L307"></a><tt class="py-lineno">307</tt> <tt class="py-line"> <tt class="py-name">append</tt><tt class="py-op">(</tt><tt class="py-name">action</tt><tt class="py-op">)</tt> </tt>
<a name="L308"></a><tt class="py-lineno">308</tt> <tt class="py-line"> <tt class="py-name">i</tt> <tt class="py-op">=</tt> <tt class="py-name">j</tt> </tt>
<a name="L309"></a><tt class="py-lineno">309</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">result</tt><tt class="py-op">,</tt> <tt class="py-name">string</tt><tt class="py-op">[</tt><tt class="py-name">i</tt><tt class="py-op">:</tt><tt class="py-op">]</tt> </tt>
</div></div><a name="L310"></a><tt class="py-lineno">310</tt> <tt class="py-line"> </tt><script type="text/javascript">
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