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Support default values for collections.namedtuple? #4788
Description
Python 3.7 adds support for specifying default values in call to collections.namedtuple, see python/cpython#4859. So for example this is valid:
from collections import namedtuple
NT = namedtuple('NT', ('x', 'y'), defaults=(0, 0))
NT()
NT(1)
NT(1, 2)Should we support this, or supporting default values for typing.NamedTuple (already implemented) is enough?
Activity
gvanrossum commentedon Mar 25, 2018
The short form of
collections.namedtupleis very popular (ask @rhettinger) and I think we should make it as easy as possible to translate its use totyping.NamedTuple. So I think we should support it.JukkaL commentedon Mar 26, 2018
I agree with @gvanrossum. Also, this doesn't look like a lot of work to implement. Tagging as high priority since 3.7 release date is pretty close.
JelleZijlstra commentedon Aug 3, 2018
Fixed by #5215.