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 _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue13804> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com