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<title>Getting started &#8212; pyfundoc documentation</title>
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<div class="section" id="getting-started">
<h1>Getting started<a class="headerlink" href="#getting-started" title="Permalink to this headline"></a></h1>
<div class="section" id="installation">
<h2>Installation<a class="headerlink" href="#installation" title="Permalink to this headline"></a></h2>
<p>Have a look at the <a class="reference external" href="http://www.python.org">python</a> website.</p>
</div>
<div class="section" id="hello-world">
<h2>Hello world<a class="headerlink" href="#hello-world" title="Permalink to this headline"></a></h2>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">python</span> <span class="o">-</span><span class="n">c</span> <span class="s2">&quot;print &#39;hello&#39;&quot;</span>
</pre></div>
</div>
<p>Opening a python prompt:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="nb">print</span><span class="p">(</span><span class="s2">&quot;hello world&quot;</span><span class="p">)</span>
<span class="go">hello world</span>
</pre></div>
</div>
<div class="literal-block-wrapper docutils container" id="hello-py">
<div class="code-block-caption"><span class="caption-text">hello.py</span><a class="headerlink" href="#hello-py" title="Permalink to this code"></a></div>
<div class="highlight-python"><div class="highlight"><pre><span></span> <span class="kn">import</span> <span class="nn">sys</span>
<span class="n">name</span> <span class="o">=</span> <span class="n">sys</span><span class="o">.</span><span class="n">argv</span><span class="p">[</span><span class="mi">1</span><span class="p">]</span>
<span class="k">print</span><span class="p">(</span><span class="s2">&quot;Hello, {0}&quot;</span><span class="o">.</span><span class="n">format</span><span class="p">(</span><span class="n">name</span><span class="p">))</span>
</pre></div>
</div>
</div>
<p>starting a web server:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">python3</span> <span class="o">-</span><span class="n">m</span> <span class="n">http</span><span class="o">.</span><span class="n">server</span> <span class="mi">8080</span>
</pre></div>
</div>
<p>importing a module</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="kn">import</span> <span class="nn">this</span>
<span class="go">Beautiful is better than ugly.</span>
<span class="go">Explicit is better than implicit.</span>
<span class="go">Simple is better than complex.</span>
<span class="go">Complex is better than complicated.</span>
</pre></div>
</div>
<p>use the builtin help</p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">help</span><span class="p">(</span><span class="n">function</span><span class="p">)</span>
</pre></div>
</div>
</div>
<div class="section" id="configure-your-prompt">
<h2>Configure your prompt<a class="headerlink" href="#configure-your-prompt" title="Permalink to this headline"></a></h2>
<p>Set your path or install a good prompt like <a class="reference external" href="https://ipython.org/ipython-doc/2/install/install.html">ipython</a></p>
<dl class="envvar">
<dt id="envvar-PYTHONPATH">
<code class="descname">PYTHONPATH</code><a class="headerlink" href="#envvar-PYTHONPATH" title="Permalink to this definition"></a></dt>
<dd><p>defaults on the current directory
you can add a path to point to some other library</p>
</dd></dl>
<p>put this in your <cite>.bashrc</cite> (under linux), under windows… I don’t know:</p>
<div class="highlight-default"><div class="highlight"><pre><span></span>export PYTHONPATH:`pwd`
export PYTHONPATH=$PYTHONPATH:&#39;/usr/share&#39;:&#39;/toto/titi/tata&#39;
alias pyenv=&#39;export PYTHONPATH=`pwd`:$PYTHONPATH&#39;
export PYTHONSTARTUP=&#39;/home/gwen/.pystartup&#39;
</pre></div>
</div>
<dl class="envvar">
<dt id="envvar-PYTHONSTARTUP">
<code class="descname">PYTHONSTARTUP</code><a class="headerlink" href="#envvar-PYTHONSTARTUP" title="Permalink to this definition"></a></dt>
<dd><p>the pystartup enables us to set the</p>
<ul class="simple">
<li>autocompletion</li>
<li>the history of the commands</li>
</ul>
</dd></dl>
<p>example of <cite>.pystartup</cite></p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="c1"># Store the file in ~/.pystartup, and set an environment variable to point to</span>
<span class="c1"># it, e.g. &quot;export PYTHONSTARTUP=/max/home/itamar/.pystartup&quot; in bash.</span>
<span class="c1">#</span>
<span class="c1"># Note that PYTHONSTARTUP does *not* expand &quot;~&quot;, so you have to put in the full</span>
<span class="c1"># path to your home directory.</span>
<span class="kn">import</span> <span class="nn">rlcompleter</span>
<span class="kn">import</span> <span class="nn">readline</span>
<span class="n">readline</span><span class="o">.</span><span class="n">parse_and_bind</span><span class="p">(</span><span class="s2">&quot;tab: complete&quot;</span><span class="p">)</span>
<span class="kn">import</span> <span class="nn">os</span>
<span class="n">histfile</span> <span class="o">=</span> <span class="n">os</span><span class="o">.</span><span class="n">path</span><span class="o">.</span><span class="n">join</span><span class="p">(</span><span class="n">os</span><span class="o">.</span><span class="n">environ</span><span class="p">[</span><span class="s2">&quot;HOME&quot;</span><span class="p">],</span> <span class="s2">&quot;.pyhist&quot;</span><span class="p">)</span>
<span class="k">try</span><span class="p">:</span>
<span class="n">readline</span><span class="o">.</span><span class="n">read_history_file</span><span class="p">(</span><span class="n">histfile</span><span class="p">)</span>
<span class="k">except</span> <span class="ne">IOError</span><span class="p">:</span>
<span class="k">pass</span>
<span class="kn">import</span> <span class="nn">atexit</span>
<span class="n">atexit</span><span class="o">.</span><span class="n">register</span><span class="p">(</span><span class="n">readline</span><span class="o">.</span><span class="n">write_history_file</span><span class="p">,</span> <span class="n">histfile</span><span class="p">)</span>
<span class="k">del</span> <span class="n">os</span><span class="p">,</span> <span class="n">histfile</span>
<span class="c1"># enhanced completion</span>
<span class="c1">#import rlcompleter2</span>
<span class="c1">#rlcompleter2.setup()</span>
</pre></div>
</div>
</div>
<div class="section" id="editors">
<h2>Editors<a class="headerlink" href="#editors" title="Permalink to this headline"></a></h2>
<p>IDLE</p>
<p><a class="reference external" href="https://docs.python.org/3/library/idle.html">https://docs.python.org/3/library/idle.html</a></p>
<p>un framework de développement intégré : <a class="reference internal" href="#term-idle"><span class="xref std std-term">IDLE</span></a></p>
<dl class="glossary docutils">
<dt id="term-idle">IDLE</dt>
<dd><a class="reference external" href="http://docs.python.org/3/library/idle.html">IDLE</a> is an IDE (Integrated Development Environnement)</dd>
</dl>
<p><a class="reference external" href="https://thonny.org/">Thonny</a></p>
<p>Otherwise, your preferred editor…</p>
</div>
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