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> Most languages with enough optimization works can be made performant enough that it's no slower than 10x C.

Maybe if we take the slowest C program, CPython no slower than 50x ?

https://benchmarksgame-team.pages.debian.net/benchmarksgame/...



CPython had many other concerns besides from performance, and PyPy is much closer to my quote I believe.


fwiw "How many lines of C it takes to execute a + b in Python" was explicitly about CPython.

fwiw PyPy doesn't seem to have been released in "the late 1990s".




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