On 6 Nov, 14:35, "Alf P. Steinbach" <al...@start.no> wrote:
> As I understand it, 'is' will always work and will always be efficient (it > just > checks the variable's type), while '==' can depend on the implementation of > equality checking for the other operand's class. '==' checks for logical equality. 'is' checks for object identity. None is a singleton of type NoneType. Since None evaluates to True only when compared against itself, it is safe to use both operators. -- http://mail.python.org/mailman/listinfo/python-list
