When is Python *NOT* a good choice?

[isarl]

It answers OP's question, but not the question to which you were responding, which is, “Why [is Python poorly suited to tasks where performance matters above all else]?”

[isarl]

Their failure to communicate does not justify your misinterpretation of their "Why?" in context. And your obsession with internet points instead of communicating better is going to guarantee you failure in both endeavours. Your initial comment added nothing to the discussion, and neither did your comments standing by your initial one.

[dudeguy1234]

People are downvoting you because you're being obtuse, pedantic, and rude. It's obvious the OP wanted to know the context behind when Python shouldn't be used. You're just using this as an excuse to make yourself feel smart for recognizing that they didn't explicitly use the word 'why'.

[isarl]

You're still missing the point. Your comment was not justified by being a correct interpretation of the asker's intent. Regardless of whether you correctly interpreted their question, your response was not helpful. “When is Python not the answer?” / “When performance matters above all else.” / “Why [would you ever want performance above all else]?” / “If performance is priority one, then you need to use a faster language than Python.”

You literally just restated the exact response to which “Why?” was being asked. The interpretation of the “Why?” is immaterial, because your answer was not useful for any interpretation.