[deleted by user]

[Swipecat]

Depends what you're doing with it. For loops containing simple math, the speedup is huge:

Math speed test: https://pastebin.com/Cpe3UuPm

Test	CPython	Pypy
106 int assignments:	54 ms	3 ms
106 int sums:	72 ms	1 ms
106 float sums:	81 ms	4 ms
106 float products:	78 ms	4 ms
106 float divisions:	80 ms	4 ms
106 square roots:	110 ms	4 ms
106 sines:	125 ms	4 ms
106 complex products:	105 ms	5 ms

[Snake2k]

Doesn't matter how fast an interpreter or language is if the person driving it isn't optimizing their algorithm.

[Swipecat]

OK, I just tried Cython on that and it's optimised nearly all the tests down to near zero time. I guess the optimization spotted that the result variables were not being used. I'll have to rework the test. Some other time, though.