Caught in the Net (Posts about mersenne twister)francescomecca.euenContents © 2024 <a href="mailto:francescomecca.eu">Francesco Mecca</a> Wed, 28 Feb 2024 09:29:26 GMTNikola (getnikola.com)http://blogs.law.harvard.edu/tech/rssThe Buridan's donkey in pythonfrancescomecca.eu/blog/2016/4/2/buridan_donkey/Francesco Mecca<p>During the final weeks of my exam session I started reading a bit about python 3 using an excellent book: <a href="http://www.diveintopython.net/">Dive into Python</a>. When I noted that python uses the <a href="https://en.wikipedia.org/wiki/Mersenne_Twister">Mersenne Twister PRNG</a> as well I decided to write another version of my <a href="http://francescomecca.eu/index.php/archives/207">Buridan's donkey program</a>.</p> <p>.. code:: python</p> <div class="code"><pre class="code literal-block"> <span class="kn">import</span> <span class="nn">random</span><span class="o">,</span> <span class="nn">sys</span> <span class="k">if</span> <span class="vm">__name__</span> <span class="o">==</span> <span class="s1">'__main__'</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="k">if</span> <span class="ow">not</span> <span class="n">sys</span><span class="o">.</span><span class="n">stdin</span><span class="o">.</span><span class="n">isatty</span><span class="p">():</span> <span class="k">for</span> <span class="n">line</span> <span class="ow">in</span> <span class="n">sys</span><span class="o">.</span><span class="n">stdin</span><span class="p">:</span> <span class="k">if</span> <span class="n">line</span><span class="p">[</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="ow">is</span> <span class="s1">'</span><span class="se">\n</span><span class="s1">'</span><span class="p">:</span> <span class="n">line</span> <span class="o">=</span> <span class="n">line</span><span class="p">[:</span><span class="o">-</span><span class="mi">1</span><span class="p">]</span> <span class="n">args</span><span class="o">.</span><span class="n">append</span><span class="p">(</span><span class="n">line</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="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="n">argRange</span> <span class="o">=</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">)</span> <span class="k">for</span> <span class="n">i</span> <span class="ow">in</span> <span class="nb">range</span><span class="p">(</span><span class="n">argRange</span><span class="p">):</span> <span class="nb">print</span><span class="p">(</span><span class="nb">str</span><span class="p">(</span><span class="n">i</span><span class="o">+</span><span class="mi">1</span><span class="p">)</span> <span class="o">+</span> <span class="s1">'.'</span><span class="p">,</span> <span class="n">args</span><span class="o">.</span><span class="n">pop</span><span class="p">(</span><span class="n">random</span><span class="o">.</span><span class="n">randrange</span><span class="p">(</span><span class="mi">0</span><span class="p">,</span> <span class="nb">len</span><span class="p">(</span><span class="n">args</span><span class="p">))))</span> </pre></div> <p>This script works in a different way than the one in c++. Rather than shuffling a list made by the entries in the arguments, it pops randomly one entry from the list till the list is empty.</p> <p>Not satisfied enough, I wrote also a telegram bot using the <a href="https://github.com/eternnoir/pyTelegramBotAPI">telebot library</a> that works as the script above but inside the telegram app. The bot can be added to your contact list by simply searching for <a href="http://telegram.me/duridan_donkey_bot">@duridan_donkey_bot</a> (yes, a typo!)</p> <p>All the code is opensource and can be found on my github page.</p> <p>Francesco Mecca</p>buridan donkeymersenne twisterPesceWandapythonrandomfrancescomecca.eu/blog/2016/4/2/buridan_donkey/Sat, 02 Apr 2016 00:00:00 GMT