Terry J. Reedy <tjre...@udel.edu> added the comment:
Batuhan, thanks for the nudge. For the record ... If __new__ were a normal instance method, then 'some_class.__new__()' would be a correct call, as 'some_class' would be passed to '__new__' as its first and perhaps only argument. But " __new__() is a static method (special-cased so you need not declare it as such)". https://docs.python.org/3/reference/datamodel.html#object.__new__ Its special-casing makes it easy to forget that its first argument, a class, must be passed explicitly. Hence Xavier's comment. In current 2.7.17 and 3.8 (for instance), with pdb left out of the picture, the missing cls argument results in TypeError: object.__new__(): not enough arguments When I pdb.run('A()') new and step, it catches the error and refuses to advance. > <pyshell#10>(3)__new__() (Pdb) s TypeError: object.__new__(): not enough arguments > <pyshell#10>(3)__new__() ---------- resolution: -> not a bug stage: -> resolved status: open -> closed type: -> behavior _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue14196> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
