[docs] [issue16225] list.remove in for loop

[Georg Brandl]

Georg Brandl added the comment:

Well, I guess Serhiy meant "neither increase nor decrease".

In the end, the exact behavior will never be clear if you don't state explicitly how it's implemented: a counter that starts at 0 and is increased on __next__ until it's equal to len(list) (as checked at every iteration step).  But in general the advice should be: if you want to insert or remove elements during iteration, iterate over a copy.

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nosy: +georg.brandl

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