<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" lang=""> <head> <meta http-equiv="X-UA-Compatible" content="IE=Edge" /> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>django.template.engine — Django 1.11.20 documentation</title> <link rel="stylesheet" href="../../../_static/default.css" type="text/css" /> <link rel="stylesheet" href="../../../_static/pygments.css" type="text/css" /> <script type="text/javascript" id="documentation_options" data-url_root="../../../" src="../../../_static/documentation_options.js"></script> <script type="text/javascript" src="../../../_static/jquery.js"></script> <script type="text/javascript" src="../../../_static/underscore.js"></script> <script type="text/javascript" src="../../../_static/doctools.js"></script> <script type="text/javascript" src="../../../_static/language_data.js"></script> <link rel="index" title="Index" href="../../../genindex.html" /> <link rel="search" title="Search" href="../../../search.html" /> <script type="text/javascript" src="../../../templatebuiltins.js"></script> <script type="text/javascript"> (function($) { if (!django_template_builtins) { // templatebuiltins.js missing, do nothing. return; } $(document).ready(function() { // Hyperlink Django template tags and filters var base = "../../../ref/templates/builtins.html"; if (base == "#") { // Special case for builtins.html itself base = ""; } // Tags are keywords, class '.k' $("div.highlight\\-html\\+django span.k").each(function(i, elem) { var tagname = $(elem).text(); if ($.inArray(tagname, django_template_builtins.ttags) != -1) { var fragment = tagname.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + tagname + "</a>"); } }); // Filters are functions, class '.nf' $("div.highlight\\-html\\+django span.nf").each(function(i, elem) { var filtername = $(elem).text(); if ($.inArray(filtername, django_template_builtins.tfilters) != -1) { var fragment = filtername.replace(/_/, '-'); $(elem).html("<a href='" + base + "#" + fragment + "'>" + filtername + "</a>"); } }); }); })(jQuery); </script> </head><body> <div class="document"> <div id="custom-doc" class="yui-t6"> <div id="hd"> <h1><a href="../../../index.html">Django 1.11.20 documentation</a></h1> <div id="global-nav"> <a title="Home page" href="../../../index.html">Home</a> | <a title="Table of contents" href="../../../contents.html">Table of contents</a> | <a title="Global index" href="../../../genindex.html">Index</a> | <a title="Module index" href="../../../py-modindex.html">Modules</a> </div> <div class="nav"> <a href="../../index.html" title="Module code" accesskey="U">up</a></div> </div> <div id="bd"> <div id="yui-main"> <div class="yui-b"> <div class="yui-g" id="_modules-django-template-engine"> <h1>Source code for django.template.engine</h1><div class="highlight"><pre> <span></span><span class="kn">from</span> <span class="nn">django.core.exceptions</span> <span class="k">import</span> <span class="n">ImproperlyConfigured</span> <span class="kn">from</span> <span class="nn">django.utils</span> <span class="k">import</span> <span class="n">lru_cache</span><span class="p">,</span> <span class="n">six</span> <span class="kn">from</span> <span class="nn">django.utils.functional</span> <span class="k">import</span> <span class="n">cached_property</span> <span class="kn">from</span> <span class="nn">django.utils.module_loading</span> <span class="k">import</span> <span class="n">import_string</span> <span class="kn">from</span> <span class="nn">.base</span> <span class="k">import</span> <span class="n">Context</span><span class="p">,</span> <span class="n">Template</span> <span class="kn">from</span> <span class="nn">.context</span> <span class="k">import</span> <span class="n">_builtin_context_processors</span> <span class="kn">from</span> <span class="nn">.exceptions</span> <span class="k">import</span> <span class="n">TemplateDoesNotExist</span> <span class="kn">from</span> <span class="nn">.library</span> <span class="k">import</span> <span class="n">import_library</span> <div class="viewcode-block" id="Engine"><a class="viewcode-back" href="../../../ref/templates/api.html#django.template.Engine">[docs]</a><span class="k">class</span> <span class="nc">Engine</span><span class="p">(</span><span class="nb">object</span><span class="p">):</span> <span class="n">default_builtins</span> <span class="o">=</span> <span class="p">[</span> <span class="s1">'django.template.defaulttags'</span><span class="p">,</span> <span class="s1">'django.template.defaultfilters'</span><span class="p">,</span> <span class="s1">'django.template.loader_tags'</span><span class="p">,</span> <span class="p">]</span> <span class="k">def</span> <span class="nf">__init__</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">dirs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">app_dirs</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">context_processors</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">debug</span><span class="o">=</span><span class="kc">False</span><span class="p">,</span> <span class="n">loaders</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">string_if_invalid</span><span class="o">=</span><span class="s1">''</span><span class="p">,</span> <span class="n">file_charset</span><span class="o">=</span><span class="s1">'utf-8'</span><span class="p">,</span> <span class="n">libraries</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">builtins</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">autoescape</span><span class="o">=</span><span class="kc">True</span><span class="p">):</span> <span class="k">if</span> <span class="n">dirs</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="n">dirs</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">if</span> <span class="n">context_processors</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="n">context_processors</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">if</span> <span class="n">loaders</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="n">loaders</span> <span class="o">=</span> <span class="p">[</span><span class="s1">'django.template.loaders.filesystem.Loader'</span><span class="p">]</span> <span class="k">if</span> <span class="n">app_dirs</span><span class="p">:</span> <span class="n">loaders</span> <span class="o">+=</span> <span class="p">[</span><span class="s1">'django.template.loaders.app_directories.Loader'</span><span class="p">]</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">debug</span><span class="p">:</span> <span class="n">loaders</span> <span class="o">=</span> <span class="p">[(</span><span class="s1">'django.template.loaders.cached.Loader'</span><span class="p">,</span> <span class="n">loaders</span><span class="p">)]</span> <span class="k">else</span><span class="p">:</span> <span class="k">if</span> <span class="n">app_dirs</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ImproperlyConfigured</span><span class="p">(</span> <span class="s2">"app_dirs must not be set when loaders is defined."</span><span class="p">)</span> <span class="k">if</span> <span class="n">libraries</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="n">libraries</span> <span class="o">=</span> <span class="p">{}</span> <span class="k">if</span> <span class="n">builtins</span> <span class="ow">is</span> <span class="kc">None</span><span class="p">:</span> <span class="n">builtins</span> <span class="o">=</span> <span class="p">[]</span> <span class="bp">self</span><span class="o">.</span><span class="n">dirs</span> <span class="o">=</span> <span class="n">dirs</span> <span class="bp">self</span><span class="o">.</span><span class="n">app_dirs</span> <span class="o">=</span> <span class="n">app_dirs</span> <span class="bp">self</span><span class="o">.</span><span class="n">autoescape</span> <span class="o">=</span> <span class="n">autoescape</span> <span class="bp">self</span><span class="o">.</span><span class="n">context_processors</span> <span class="o">=</span> <span class="n">context_processors</span> <span class="bp">self</span><span class="o">.</span><span class="n">debug</span> <span class="o">=</span> <span class="n">debug</span> <span class="bp">self</span><span class="o">.</span><span class="n">loaders</span> <span class="o">=</span> <span class="n">loaders</span> <span class="bp">self</span><span class="o">.</span><span class="n">string_if_invalid</span> <span class="o">=</span> <span class="n">string_if_invalid</span> <span class="bp">self</span><span class="o">.</span><span class="n">file_charset</span> <span class="o">=</span> <span class="n">file_charset</span> <span class="bp">self</span><span class="o">.</span><span class="n">libraries</span> <span class="o">=</span> <span class="n">libraries</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_libraries</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template_libraries</span><span class="p">(</span><span class="n">libraries</span><span class="p">)</span> <span class="bp">self</span><span class="o">.</span><span class="n">builtins</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">default_builtins</span> <span class="o">+</span> <span class="n">builtins</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_builtins</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template_builtins</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">builtins</span><span class="p">)</span> <div class="viewcode-block" id="Engine.get_default"><a class="viewcode-back" href="../../../ref/templates/api.html#django.template.Engine.get_default">[docs]</a> <span class="nd">@staticmethod</span> <span class="nd">@lru_cache</span><span class="o">.</span><span class="n">lru_cache</span><span class="p">()</span> <span class="k">def</span> <span class="nf">get_default</span><span class="p">():</span> <span class="sd">"""</span> <span class="sd"> When only one DjangoTemplates backend is configured, returns it.</span> <span class="sd"> Raises ImproperlyConfigured otherwise.</span> <span class="sd"> This is required for preserving historical APIs that rely on a</span> <span class="sd"> globally available, implicitly configured engine such as:</span> <span class="sd"> >>> from django.template import Context, Template</span> <span class="sd"> >>> template = Template("Hello {{ name }}!")</span> <span class="sd"> >>> context = Context({'name': "world"})</span> <span class="sd"> >>> template.render(context)</span> <span class="sd"> 'Hello world!'</span> <span class="sd"> """</span> <span class="c1"># Since Engine is imported in django.template and since</span> <span class="c1"># DjangoTemplates is a wrapper around this Engine class,</span> <span class="c1"># local imports are required to avoid import loops.</span> <span class="kn">from</span> <span class="nn">django.template</span> <span class="k">import</span> <span class="n">engines</span> <span class="kn">from</span> <span class="nn">django.template.backends.django</span> <span class="k">import</span> <span class="n">DjangoTemplates</span> <span class="n">django_engines</span> <span class="o">=</span> <span class="p">[</span><span class="n">engine</span> <span class="k">for</span> <span class="n">engine</span> <span class="ow">in</span> <span class="n">engines</span><span class="o">.</span><span class="n">all</span><span class="p">()</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">engine</span><span class="p">,</span> <span class="n">DjangoTemplates</span><span class="p">)]</span> <span class="k">if</span> <span class="nb">len</span><span class="p">(</span><span class="n">django_engines</span><span class="p">)</span> <span class="o">==</span> <span class="mi">1</span><span class="p">:</span> <span class="c1"># Unwrap the Engine instance inside DjangoTemplates</span> <span class="k">return</span> <span class="n">django_engines</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span><span class="o">.</span><span class="n">engine</span> <span class="k">elif</span> <span class="nb">len</span><span class="p">(</span><span class="n">django_engines</span><span class="p">)</span> <span class="o">==</span> <span class="mi">0</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ImproperlyConfigured</span><span class="p">(</span> <span class="s2">"No DjangoTemplates backend is configured."</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ImproperlyConfigured</span><span class="p">(</span> <span class="s2">"Several DjangoTemplates backends are configured. "</span> <span class="s2">"You must select one explicitly."</span><span class="p">)</span></div> <span class="nd">@cached_property</span> <span class="k">def</span> <span class="nf">template_context_processors</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="n">context_processors</span> <span class="o">=</span> <span class="n">_builtin_context_processors</span> <span class="n">context_processors</span> <span class="o">+=</span> <span class="nb">tuple</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">context_processors</span><span class="p">)</span> <span class="k">return</span> <span class="nb">tuple</span><span class="p">(</span><span class="n">import_string</span><span class="p">(</span><span class="n">path</span><span class="p">)</span> <span class="k">for</span> <span class="n">path</span> <span class="ow">in</span> <span class="n">context_processors</span><span class="p">)</span> <span class="k">def</span> <span class="nf">get_template_builtins</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">builtins</span><span class="p">):</span> <span class="k">return</span> <span class="p">[</span><span class="n">import_library</span><span class="p">(</span><span class="n">x</span><span class="p">)</span> <span class="k">for</span> <span class="n">x</span> <span class="ow">in</span> <span class="n">builtins</span><span class="p">]</span> <span class="k">def</span> <span class="nf">get_template_libraries</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">libraries</span><span class="p">):</span> <span class="n">loaded</span> <span class="o">=</span> <span class="p">{}</span> <span class="k">for</span> <span class="n">name</span><span class="p">,</span> <span class="n">path</span> <span class="ow">in</span> <span class="n">libraries</span><span class="o">.</span><span class="n">items</span><span class="p">():</span> <span class="n">loaded</span><span class="p">[</span><span class="n">name</span><span class="p">]</span> <span class="o">=</span> <span class="n">import_library</span><span class="p">(</span><span class="n">path</span><span class="p">)</span> <span class="k">return</span> <span class="n">loaded</span> <span class="nd">@cached_property</span> <span class="k">def</span> <span class="nf">template_loaders</span><span class="p">(</span><span class="bp">self</span><span class="p">):</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template_loaders</span><span class="p">(</span><span class="bp">self</span><span class="o">.</span><span class="n">loaders</span><span class="p">)</span> <span class="k">def</span> <span class="nf">get_template_loaders</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">template_loaders</span><span class="p">):</span> <span class="n">loaders</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">for</span> <span class="n">template_loader</span> <span class="ow">in</span> <span class="n">template_loaders</span><span class="p">:</span> <span class="n">loader</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">find_template_loader</span><span class="p">(</span><span class="n">template_loader</span><span class="p">)</span> <span class="k">if</span> <span class="n">loader</span> <span class="ow">is</span> <span class="ow">not</span> <span class="kc">None</span><span class="p">:</span> <span class="n">loaders</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">loader</span><span class="p">)</span> <span class="k">return</span> <span class="n">loaders</span> <span class="k">def</span> <span class="nf">find_template_loader</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">loader</span><span class="p">):</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">loader</span><span class="p">,</span> <span class="p">(</span><span class="nb">tuple</span><span class="p">,</span> <span class="nb">list</span><span class="p">)):</span> <span class="n">args</span> <span class="o">=</span> <span class="nb">list</span><span class="p">(</span><span class="n">loader</span><span class="p">[</span><span class="mi">1</span><span class="p">:])</span> <span class="n">loader</span> <span class="o">=</span> <span class="n">loader</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="k">else</span><span class="p">:</span> <span class="n">args</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">loader</span><span class="p">,</span> <span class="n">six</span><span class="o">.</span><span class="n">string_types</span><span class="p">):</span> <span class="n">loader_class</span> <span class="o">=</span> <span class="n">import_string</span><span class="p">(</span><span class="n">loader</span><span class="p">)</span> <span class="k">return</span> <span class="n">loader_class</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="o">*</span><span class="n">args</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">raise</span> <span class="n">ImproperlyConfigured</span><span class="p">(</span> <span class="s2">"Invalid value in template loaders configuration: </span><span class="si">%r</span><span class="s2">"</span> <span class="o">%</span> <span class="n">loader</span><span class="p">)</span> <span class="k">def</span> <span class="nf">find_template</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">name</span><span class="p">,</span> <span class="n">dirs</span><span class="o">=</span><span class="kc">None</span><span class="p">,</span> <span class="n">skip</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="n">tried</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">for</span> <span class="n">loader</span> <span class="ow">in</span> <span class="bp">self</span><span class="o">.</span><span class="n">template_loaders</span><span class="p">:</span> <span class="k">if</span> <span class="n">loader</span><span class="o">.</span><span class="n">supports_recursion</span><span class="p">:</span> <span class="k">try</span><span class="p">:</span> <span class="n">template</span> <span class="o">=</span> <span class="n">loader</span><span class="o">.</span><span class="n">get_template</span><span class="p">(</span> <span class="n">name</span><span class="p">,</span> <span class="n">template_dirs</span><span class="o">=</span><span class="n">dirs</span><span class="p">,</span> <span class="n">skip</span><span class="o">=</span><span class="n">skip</span><span class="p">,</span> <span class="p">)</span> <span class="k">return</span> <span class="n">template</span><span class="p">,</span> <span class="n">template</span><span class="o">.</span><span class="n">origin</span> <span class="k">except</span> <span class="n">TemplateDoesNotExist</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span> <span class="n">tried</span><span class="o">.</span><span class="n">extend</span><span class="p">(</span><span class="n">e</span><span class="o">.</span><span class="n">tried</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="c1"># RemovedInDjango20Warning: Use old api for non-recursive</span> <span class="c1"># loaders.</span> <span class="k">try</span><span class="p">:</span> <span class="k">return</span> <span class="n">loader</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">dirs</span><span class="p">)</span> <span class="k">except</span> <span class="n">TemplateDoesNotExist</span><span class="p">:</span> <span class="k">pass</span> <span class="k">raise</span> <span class="n">TemplateDoesNotExist</span><span class="p">(</span><span class="n">name</span><span class="p">,</span> <span class="n">tried</span><span class="o">=</span><span class="n">tried</span><span class="p">)</span> <div class="viewcode-block" id="Engine.from_string"><a class="viewcode-back" href="../../../ref/templates/api.html#django.template.Engine.from_string">[docs]</a> <span class="k">def</span> <span class="nf">from_string</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">template_code</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Returns a compiled Template object for the given template code,</span> <span class="sd"> handling template inheritance recursively.</span> <span class="sd"> """</span> <span class="k">return</span> <span class="n">Template</span><span class="p">(</span><span class="n">template_code</span><span class="p">,</span> <span class="n">engine</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span></div> <div class="viewcode-block" id="Engine.get_template"><a class="viewcode-back" href="../../../ref/templates/api.html#django.template.Engine.get_template">[docs]</a> <span class="k">def</span> <span class="nf">get_template</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">template_name</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Returns a compiled Template object for the given template name,</span> <span class="sd"> handling template inheritance recursively.</span> <span class="sd"> """</span> <span class="n">template</span><span class="p">,</span> <span class="n">origin</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">find_template</span><span class="p">(</span><span class="n">template_name</span><span class="p">)</span> <span class="k">if</span> <span class="ow">not</span> <span class="nb">hasattr</span><span class="p">(</span><span class="n">template</span><span class="p">,</span> <span class="s1">'render'</span><span class="p">):</span> <span class="c1"># template needs to be compiled</span> <span class="n">template</span> <span class="o">=</span> <span class="n">Template</span><span class="p">(</span><span class="n">template</span><span class="p">,</span> <span class="n">origin</span><span class="p">,</span> <span class="n">template_name</span><span class="p">,</span> <span class="n">engine</span><span class="o">=</span><span class="bp">self</span><span class="p">)</span> <span class="k">return</span> <span class="n">template</span></div> <span class="k">def</span> <span class="nf">render_to_string</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">template_name</span><span class="p">,</span> <span class="n">context</span><span class="o">=</span><span class="kc">None</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Render the template specified by template_name with the given context.</span> <span class="sd"> For use in Django's test suite.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">template_name</span><span class="p">,</span> <span class="p">(</span><span class="nb">list</span><span class="p">,</span> <span class="nb">tuple</span><span class="p">)):</span> <span class="n">t</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">select_template</span><span class="p">(</span><span class="n">template_name</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="n">t</span> <span class="o">=</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template</span><span class="p">(</span><span class="n">template_name</span><span class="p">)</span> <span class="c1"># Django < 1.8 accepted a Context in `context` even though that's</span> <span class="c1"># unintended. Preserve this ability but don't rewrap `context`.</span> <span class="k">if</span> <span class="nb">isinstance</span><span class="p">(</span><span class="n">context</span><span class="p">,</span> <span class="n">Context</span><span class="p">):</span> <span class="k">return</span> <span class="n">t</span><span class="o">.</span><span class="n">render</span><span class="p">(</span><span class="n">context</span><span class="p">)</span> <span class="k">else</span><span class="p">:</span> <span class="k">return</span> <span class="n">t</span><span class="o">.</span><span class="n">render</span><span class="p">(</span><span class="n">Context</span><span class="p">(</span><span class="n">context</span><span class="p">))</span> <div class="viewcode-block" id="Engine.select_template"><a class="viewcode-back" href="../../../ref/templates/api.html#django.template.Engine.select_template">[docs]</a> <span class="k">def</span> <span class="nf">select_template</span><span class="p">(</span><span class="bp">self</span><span class="p">,</span> <span class="n">template_name_list</span><span class="p">):</span> <span class="sd">"""</span> <span class="sd"> Given a list of template names, returns the first that can be loaded.</span> <span class="sd"> """</span> <span class="k">if</span> <span class="ow">not</span> <span class="n">template_name_list</span><span class="p">:</span> <span class="k">raise</span> <span class="n">TemplateDoesNotExist</span><span class="p">(</span><span class="s2">"No template names provided"</span><span class="p">)</span> <span class="n">not_found</span> <span class="o">=</span> <span class="p">[]</span> <span class="k">for</span> <span class="n">template_name</span> <span class="ow">in</span> <span class="n">template_name_list</span><span class="p">:</span> <span class="k">try</span><span class="p">:</span> <span class="k">return</span> <span class="bp">self</span><span class="o">.</span><span class="n">get_template</span><span class="p">(</span><span class="n">template_name</span><span class="p">)</span> <span class="k">except</span> <span class="n">TemplateDoesNotExist</span> <span class="k">as</span> <span class="n">exc</span><span class="p">:</span> <span class="k">if</span> <span class="n">exc</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">]</span> <span class="ow">not</span> <span class="ow">in</span> <span class="n">not_found</span><span class="p">:</span> <span class="n">not_found</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">exc</span><span class="o">.</span><span class="n">args</span><span class="p">[</span><span class="mi">0</span><span class="p">])</span> <span class="k">continue</span> <span class="c1"># If we get here, none of the templates could be loaded</span> <span class="k">raise</span> <span class="n">TemplateDoesNotExist</span><span class="p">(</span><span class="s1">', '</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">not_found</span><span class="p">))</span></div></div> </pre></div> </div> </div> </div> <div class="yui-b" id="sidebar"> <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> <div class="sphinxsidebarwrapper"> <div id="searchbox" style="display: none" role="search"> <h3>Quick search</h3> <div class="searchformwrapper"> <form class="search" action="../../../search.html" method="get"> <input type="text" name="q" /> <input type="submit" value="Go" /> <input type="hidden" name="check_keywords" value="yes" /> <input type="hidden" name="area" value="default" /> </form> </div> </div> <script type="text/javascript">$('#searchbox').show(0);</script> </div> </div> <h3>Last update:</h3> <p class="topless">Feb 11, 2019</p> </div> </div> <div id="ft"> <div class="nav"> <a href="../../index.html" title="Module code" accesskey="U">up</a></div> </div> </div> <div class="clearer"></div> </div> </body> </html>