Terry J. Reedy <tjre...@udel.edu> added the comment:
I am closing this because map has even less chance of being made a collection
method than join. Unlike join, map takes any positive number of iterables as
args, not just one. 'Iterables' includes iterators, which intentionally need
have no methods other than __iter__ and __next__.
If map were an attribute, it should be an attribute of 'function' (except that
there is no one function class).
To abstract attributes, use get/setattr. Untested example:
def atcat(self, src, src_at, dst):
res = []
for col in getattr(self, src):
res += getattr(col, src_at)
setattr(self, dst, res)
----------
nosy: +terry.reedy
resolution: -> rejected
status: open -> closed
versions: +Python 3.3
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<http://bugs.python.org/issue13804>
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