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is an improved version of the old pydot project that provides a Python Interface to Graphviz’s Dot language.</p> <h3 id="installation"><a href="#installation" class="header-anchor">#</a> Installation</h3> <p>For the latest stable version:</p> <div class="language-py extra-class"><pre class="language-py"><code>pip install pydotplus
</code></pre></div><p>For the development version:</p> <div class="language-py extra-class"><pre class="language-py"><code>pip install https<span class="token punctuation">:</span><span class="token operator">//</span>github<span class="token punctuation">.</span>com<span class="token operator">/</span>carlos<span class="token operator">-</span>jenkins<span class="token operator">/</span>pydotplus<span class="token operator">/</span>archive<span class="token operator">/</span>master<span class="token punctuation">.</span><span class="token builtin">zip</span>
</code></pre></div><ul><li>The file is assumed to be in DOT format. It will be loaded, parsed and a Dot class will be returned, representing the graph. For example,a simple demo.dot:</li></ul> <blockquote></blockquote> <p>digraph demo1{
a -> b -> c;
c ->a;
}</p> <div class="language-py extra-class"><pre class="language-py"><code><span class="token keyword">import</span> pydotplus
graph_a <span class="token operator">=</span> pydotplus<span class="token punctuation">.</span>graph_from_dot_file<span class="token punctuation">(</span><span class="token string">'demo.dot'</span><span class="token punctuation">)</span>
graph_a<span class="token punctuation">.</span>write_svg<span class="token punctuation">(</span><span class="token string">'test.svg'</span><span class="token punctuation">)</span> <span class="token comment"># generate graph in svg.</span>
</code></pre></div><p>You will get a svg(Scalable Vector Graphics) like this:</p> <p><a href="https://i.stack.imgur.com/Wz3LU.png" target="_blank" rel="noopener noreferrer"><img src="https://i.stack.imgur.com/Wz3LU.png" alt="enter image description here"><span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <h2 id="pygraphviz"><a href="#pygraphviz" class="header-anchor">#</a> PyGraphviz</h2> <p>Get PyGraphviz from the Python Package Index at <a href="http://pypi.python.org/pypi/pygraphviz" target="_blank" rel="noopener noreferrer">http://pypi.python.org/pypi/pygraphviz<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <p>or install it with:</p> <p><code>pip install pygraphviz</code></p> <p>and an attempt will be made to find and install an appropriate version that matches your operating system and Python version.</p> <p>You can install the development version (at github.com) with:</p> <p><code>pip install git://github.com/pygraphviz/pygraphviz.git#egg=pygraphviz</code></p> <p>Get PyGraphviz from the Python Package Index at <a href="http://pypi.python.org/pypi/pygraphviz" target="_blank" rel="noopener noreferrer">http://pypi.python.org/pypi/pygraphviz<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p> <p>or install it with:</p> <p><code>easy_install pygraphviz</code></p> <p>and an attempt will be made to find and install an appropriate version that matches your operating system and Python version.</p> <ul><li>The file is assumed to be in DOT format. It will be loaded, parsed and a Dot class will be returned, representing the graph. For example,a simple demo.dot:</li></ul> <blockquote></blockquote> <p>digraph demo1{
a -> b -> c;
c ->a;
}</p> <ul><li>Load it and draw it.</li></ul> <div class="language-py extra-class"><pre class="language-py"><code><span class="token keyword">import</span> pygraphviz <span class="token keyword">as</span> pgv
G <span class="token operator">=</span> pgv<span class="token punctuation">.</span>AGraph<span class="token punctuation">(</span><span class="token string">"demo.dot"</span><span class="token punctuation">)</span>
G<span class="token punctuation">.</span>draw<span class="token punctuation">(</span><span class="token string">'test'</span><span class="token punctuation">,</span> <span class="token builtin">format</span><span class="token operator">=</span><span class="token string">'svg'</span><span class="token punctuation">,</span> prog<span class="token operator">=</span><span class="token string">'dot'</span><span class="token punctuation">)</span>
</code></pre></div><p>You will get a svg(Scalable Vector Graphics) like this:</p> <p><a href="https://i.stack.imgur.com/Wz3LU.png" target="_blank" rel="noopener noreferrer"><img src="https://i.stack.imgur.com/Wz3LU.png" alt="enter image description here"><span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></p></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/devtut/generate/edit/master/docs/python/graph-tool.md" target="_blank" rel="noopener noreferrer">Edit this page on GitHub</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <!----></footer> <div class="page-nav"><p class="inner"><span class="prev">
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