anthony shaw <anthony.p.s...@gmail.com> added the comment:

> In such case, current behavior works.  And your patch will raise 
> OverflowError.

Try

[x for x in range(2**1000)] 

in a REPL. It doesn’t raise anything, it tries to create a list that will 
eventually exceed PY_SIZE_MAX, but it only crashes once it reaches that 
iteration.

This raises an OverflowError instead, the same way:
len(range(2**1000))
raises an OverflowError

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue36551>
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