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<div class="section" id="football">
<span id="graph-football"></span><h1>Football<a class="headerlink" href="#football" title="Permalink to this headline">ΒΆ</a></h1>
<p>[<a class="reference external" href="../../_static/examples/football.py">source code</a>]</p>
<div class="highlight-python"><div class="highlight"><pre><span class="c">#!/usr/bin/env python</span>
<span class="sd">"""</span>
<span class="sd">Load football network in GML format and compute some network statistcs.</span>
<span class="sd">Shows how to download GML graph in a zipped file, unpack it, and load</span>
<span class="sd">into a NetworkX graph.</span>
<span class="sd">Requires Internet connection to download the URL</span>
<span class="sd">http://www-personal.umich.edu/~mejn/netdata/football.zip</span>
<span class="sd">"""</span>
<span class="n">__author__</span> <span class="o">=</span> <span class="s">"""Aric Hagberg (hagberg@lanl.gov)"""</span>
<span class="c"># Copyright (C) 2007 by</span>
<span class="c"># Aric Hagberg <hagberg@lanl.gov></span>
<span class="c"># Dan Schult <dschult@colgate.edu></span>
<span class="c"># Pieter Swart <swart@lanl.gov></span>
<span class="c"># All rights reserved.</span>
<span class="c"># BSD license.</span>
<span class="k">try</span><span class="p">:</span>
<span class="kn">import</span> <span class="nn">pyparsing</span>
<span class="k">except</span> <span class="ne">ImportError</span> <span class="k">as</span> <span class="n">e</span><span class="p">:</span>
<span class="k">raise</span> <span class="ne">ImportError</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">e</span><span class="p">)</span><span class="o">+</span><span class="s">". Check http://pyparsing.wikispaces.com/"</span><span class="p">)</span>
<span class="kn">from</span> <span class="nn">networkx</span> <span class="kn">import</span> <span class="o">*</span>
<span class="n">url</span><span class="o">=</span><span class="s">"http://www-personal.umich.edu/~mejn/netdata/football.zip"</span>
<span class="k">try</span><span class="p">:</span> <span class="c"># Python 3.x</span>
<span class="kn">import</span> <span class="nn">urllib.request</span> <span class="kn">as</span> <span class="nn">urllib</span>
<span class="k">except</span> <span class="ne">ImportError</span><span class="p">:</span> <span class="c"># Python 2.x</span>
<span class="kn">import</span> <span class="nn">urllib</span>
<span class="kn">import</span> <span class="nn">io</span>
<span class="kn">import</span> <span class="nn">zipfile</span>
<span class="n">sock</span> <span class="o">=</span> <span class="n">urllib</span><span class="o">.</span><span class="n">urlopen</span><span class="p">(</span><span class="n">url</span><span class="p">)</span> <span class="c"># open URL</span>
<span class="n">s</span><span class="o">=</span><span class="n">io</span><span class="o">.</span><span class="n">BytesIO</span><span class="p">(</span><span class="n">sock</span><span class="o">.</span><span class="n">read</span><span class="p">())</span> <span class="c"># read into BytesIO "file"</span>
<span class="n">sock</span><span class="o">.</span><span class="n">close</span><span class="p">()</span>
<span class="n">zf</span> <span class="o">=</span> <span class="n">zipfile</span><span class="o">.</span><span class="n">ZipFile</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="c"># zipfile object</span>
<span class="n">txt</span><span class="o">=</span><span class="n">zf</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="s">'football.txt'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">()</span> <span class="c"># read info file</span>
<span class="n">gml</span><span class="o">=</span><span class="n">zf</span><span class="o">.</span><span class="n">read</span><span class="p">(</span><span class="s">'football.gml'</span><span class="p">)</span><span class="o">.</span><span class="n">decode</span><span class="p">()</span> <span class="c"># read gml data</span>
<span class="c"># throw away bogus first line with # from mejn files</span>
<span class="n">gml</span><span class="o">=</span><span class="n">gml</span><span class="o">.</span><span class="n">split</span><span class="p">(</span><span class="s">'</span><span class="se">\n</span><span class="s">'</span><span class="p">)[</span><span class="mi">1</span><span class="p">:]</span>
<span class="n">G</span><span class="o">=</span><span class="n">parse_gml</span><span class="p">(</span><span class="n">gml</span><span class="p">)</span> <span class="c"># parse gml data</span>
<span class="k">print</span><span class="p">(</span><span class="n">txt</span><span class="p">)</span>
<span class="c"># print degree for each team - number of games</span>
<span class="k">for</span> <span class="n">n</span><span class="p">,</span><span class="n">d</span> <span class="ow">in</span> <span class="n">G</span><span class="o">.</span><span class="n">degree_iter</span><span class="p">():</span>
<span class="k">print</span><span class="p">(</span><span class="s">'</span><span class="si">%s</span><span class="s"> </span><span class="si">%d</span><span class="s">'</span> <span class="o">%</span> <span class="p">(</span><span class="n">n</span><span class="p">,</span> <span class="n">d</span><span class="p">))</span>
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