Raymond Hettinger added the comment: -1 from me as well.
The need has already been fulfilled in other ways (defaultdict and __missing__). I don't think we need yet another way to do it. Also, I suspect that the benefit of a lazy instantiation would be more than offset by cost of passing in the arguments (global variable lookup for the list builtin, a load constant for True, and the keyword argument processing). Lastly, I don't like making the signature more complex or further breaking the already loose symmetry with dict.get() and dict.pop(). Likewise, this isn't parallel with other tools that take a default argument such as min(), max(), getattr(), etc. ---------- _______________________________________ Python tracker <rep...@bugs.python.org> <http://bugs.python.org/issue31240> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
