On Sun, 18 Sept 2022 at 09:37, Eryk Sun <eryk...@gmail.com> wrote: > > On 9/17/22, Chris Angelico <ros...@gmail.com> wrote: > > > > The two are basically equivalent. Using functools.partial emphasizes > > the fact that all you're doing is "locking in" the first parameter; > > using the __get__ method emphasizes the fact that functions are, > > fundamentally, the same thing as methods. Choose whichever one makes > > sense to you! > > Functions are really not "fundamentally, the same thing as methods". > They're only the same in that they're both callable. Also, a method's > __getattribute__() falls back on looking up attributes on the > underlying function (i.e. the method's __func__), such as inspecting > the __name__ and __code__. A fundamental difference is that, unlike a > function, a method is not a descriptor. Thus if a method object is set > as an attribute of a type, the method does not rebind as a new method > when accessed as an attribute of an instance of the type.
An unbound method in Python 2 was distinctly different from a function, but in Python 3, they really truly are the same thing. A bound method object is a small wrapper around a function which binds its 'self' parameter; that's a distinction, but not a fundamental one. Yes, a bound method isn't a descriptor; that's not really a huge difference either, though. A method IS a function. A bound method is a function with one argument locked in, but still a function. ChrisA -- https://mail.python.org/mailman/listinfo/python-list
