&gt; First, there&#x27;s no reason to only associate &quot;Python&quot; with &quot;the language&quot;, it is an environment, ecosystem, etc. It&#x27;s not interesting to narrowly focus on the efficiency of the interpreter.<p>Sure, but that&#x27;s how people construe the post, which I think the author knows too.<p>The post could have been accurately titled <i>&quot;Python has certain libraries that are fast enough for HPSC&quot;</i>, but that wouldn&#x27;t have generated nearly as much interest as <i>&quot;Why I still use Python for HPSC&quot;</i>.<p>People want to see others say good things about their favourite <i>language</i>, which in this case is Python.<p>I knew where the article was going (with the libraries), but still wanted to read it because even I wanted to see someone compliment Python itself, because it used to be my &quot;primary language&quot;.<p>Python is a good language, but to the extent you&#x27;re <i>not</i> using those highly optimized &quot;C-libraries&quot;, it just doesn&#x27;t perform well, and it&#x27;s not suited for concurrency. That&#x27;s a part of why I switched to Clojure.