Raymond Hettinger <raymond.hettin...@gmail.com> added the comment:

Sorry for the wording of the last message.  Go ahead with whatever you would 
like do :-) 

Was only trying to point-out that the generator semantics don't interact nicely 
with slice assignments:

    $ python3.9 -m timeit -s 'a=list(range(1000))' 'b=a[:]' 'b[:]=(x for x in 
a)'
    5000 loops, best of 5: 46.6 usec per loop

    $ python3.9 -m timeit -s 'a=list(range(1000))' 'b=a[:]' 'b[:]=[x for x in 
a]'
    10000 loops, best of 5: 26.3 usec per loop

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Python tracker <rep...@bugs.python.org>
<https://bugs.python.org/issue41774>
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