[issue36761] Extended slice assignment + iterable unpacking
Serhiy Storchaka
report at bugs.python.org
Wed May 1 05:23:10 EDT 2019
Serhiy Storchaka <storchaka+cpython at gmail.com> added the comment:
For the second case, you can use
a, *L[::2] = "abc"
For the first case this does not work, because an assignment can have only one starred expression.
Making the first case to work as you expected is breaking change. Currently
L[:], *rest = 'abcdef'
sets L to ['a'] and rest to ['b', 'c', 'd', 'e', 'f']. Consistent implementing of your idea would set L to ['a', 'b', 'c'] and rest to ['d', 'e', 'f'] (because len(L[:]) == 3 before assignment).
What is your use case? Why do you need such syntax?
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nosy: +serhiy.storchaka
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<https://bugs.python.org/issue36761>
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