Bernát Gábor — Python packaging, tox, virtualenv & open source

<p>A <a href="https://nownownow.com/about" target="_blank" rel="noopener noreferrer">now page</a> : what has my attention this month.

<p>Python&rsquo;s <code>html.escape</code> can scan one string five times.

<div class="alert alert-info"> <p class="alert-title"><i class="fa-solid fa-circle-info" aria-hidden="true"></i> TLDR:</p> <ul> <li><a href="#why-multithreaded-python-tests-are-flaky"><strong>The problem</strong></a> : testing multithreaded code is hard b…

<p>The <a href="https://us.pycon.org/2026/events/packaging-summit/" target="_blank" rel="noopener noreferrer">PyCon US 2026 Packaging Summit</a> ran Friday May 15, 2026, from 1:45 PM to 5:45 PM in Room 201A of the Long Beach Convention Center.

<p>The <a href="https://us.pycon.org/2026/events/typing-summit/" target="_blank" rel="noopener noreferrer">PyCon US 2026 Typing Summit</a> ran Thursday May 14, 2026, from 1 PM to 5 PM in Room 201A of the Long Beach Convention Center, the day before the ma…

<p><a href="https://www.pytexas.org/" target="_blank" rel="noopener noreferrer">PyTexas</a> is the annual Python conference held in Austin, Texas.

<div class="alert alert-info"> <p class="alert-title"><i class="fa-solid fa-circle-info" aria-hidden="true"></i> TLDR:</p> <p>Layer your defenses and do not trust any single control.

<p>The <a href="https://en.wikipedia.org/wiki/Don%27t_repeat_yourself" target="_blank" rel="noopener noreferrer">DRY principle</a> (an acronym for don&rsquo;t repeat yourself) encourages software engineers to abstract code into a separate component and re…

<p>In my previous two posts, I&rsquo;ve gone over [what package types python has](https://bernat.tech/posts/pep-517-and-python-packaging/), and [how the package building works](https://bernat.tech/posts/pep-517-518/), especially with the introduction of t…

<p>Have you ever wondered what happens when you run pip install?

<p>pip 19.0 has been released on 22nd January 2019.

<p>One of the main selling points for Python is that it is dynamically-typed.