https://dailypytips.com/tags/concurrency/Recent content in Concurrency on DailyPyTipsHugo -- 0.161.1en-usSat, 02 May 2026 00:00:00 +0000https://dailypytips.com/posts/day10/Sat, 02 May 2026 00:00:00 +0000https://dailypytips.com/posts/day10/<blockquote> <p>You think Python runs things in parallel. Most of the time, it doesn’t.</p> </blockquote> <p>Today, you understand how Python handles concurrency, why it behaves the way it does, and how async actually works.</p> <hr> <h2 id="todays-goal">Today’s Goal</h2> <p>By the end of today, you will:</p> <ul> <li>Understand concurrency vs parallelism</li> <li>Learn about threads and the GIL</li> <li>Understand async/await internals</li> <li>Know when to use threading vs async vs multiprocessing</li> </ul> <hr> <h2 id="the-illusion">The Illusion</h2> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-python" data-lang="python"><span class="line"><span class="cl"><span class="kn">import</span> <span class="nn">threading</span> </span></span><span class="line"><span class="cl"> </span></span><span class="line"><span class="cl"><span class="k">def</span> <span class="nf">task</span><span class="p">():</span> </span></span><span class="line"><span class="cl"> <span class="nb">print</span><span class="p">(</span><span class="s2">&#34;running&#34;</span><span class="p">)</span> </span></span><span class="line"><span class="cl"> </span></span><span class="line"><span class="cl"><span class="n">threading</span><span class="o">.</span><span class="n">Thread</span><span class="p">(</span><span class="n">target</span><span class="o">=</span><span class="n">task</span><span class="p">)</span><span class="o">.</span><span class="n">start</span><span class="p">()</span> </span></span></code></pre></div><p>You think:</p>