How to replace an instance method?

[Eryk Sun]

On 9/17/22, Chris Angelico <rosuav at 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.