On 8/08/12 04:14:01, Steven D'Aprano wrote: > NoneType raises an error if you try to create a second instance. bool > just returns one of the two singletons (doubletons?) again. > > py> type(None)() > Traceback (most recent call last): > File "<stdin>", line 1, in <module> > TypeError: cannot create 'NoneType' instances
Why is that? Why doesn't it just return an existing instance of the type, like bool, int, str and other built-in non-mutable types do? > py> type(False)() is False > True Just wondering, -- HansM -- http://mail.python.org/mailman/listinfo/python-list
