&gt; I had to support Python 2.4... large enterprise customers that are &#x2F; were running Python 2.4 on servers...<p>How did the switch to Lua not break this in the same way?<p>Sorry for the naive question, I&#x27;m just not following how it can be possible to change languages, but impossible to change versions. At first glance, the latter seems like a special case of the former.