Raymond Hettinger <[email protected]> added the comment:
Here's the status of the various ways to do it:
1) In 3.7, collections.namedtuple() added the *defaults* parameter and the
*_field_defaults* attribute.
2) In 3.6.1, typing.NamedTuple added support for default values.
3) In older versions of Python, it was always possible to directly attach
default values:
>>> from collections import namedtuple
>>> Point = namedtuple('Point', ('x', 'y'))
>>> Point.__new__.__defaults__ = (10, )
>>> Point(5)
Point(x=5, y=10)
Given that we can't introduce new features to old versions of Python, it looks
like this can be closed as "out-of-date".
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Python tracker <[email protected]>
<https://bugs.python.org/issue38996>
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