To be fair, the article doesn&#x27;t say &quot;Python is fast.&quot; It says &quot;Python is slow,&quot; and then goes on to say something like &quot;But if most of your heavy-duty calculation involves calling prewritten C routines, you can do your development work in Python without getting killed on performance.&quot;<p>Language discussions always seem to go down the same dismal tube in the end: &quot;Is C &gt; Python, or is Python &gt; C?&quot;