How to create instance specific function counter?

Question

I would like to track function count inside the class but such that this count is different for each instance of the class.

We can set up a counter on a simple function:

def foo1():
    pass

foo1.count = 0
foo1.count +=1
print(foo1.count)

Now let`s turn to class methods:

class A:
    def foo2(self):
        print('Hi')

we can set counter here as well

A.foo2.count = 0
a = A()
b = A()

but this count is NOT instance specific

A.foo2.count += 1
print(a.foo2.count)
print(b.foo2.count)

it is not possible to set count for an INSTANCE method:

a.foo2.count += 1

and if we use __func__ it will be equivalent to changing A.foo2.count:

a.foo2.__func__.count += 1
print(b.foo2.count)
print(a.foo2.count)
print(A.foo2.count)

Question: how to make foo2.count INSTANCE specific ? So that a and b could have multiple values of foo2.count ?

Please note: I am asking about function attribute, not class attribute.

Answer 1

Maybe this then?

from collections import defaultdict


def foo1():
    print('Hi')
foo1.count = defaultdict(int)

class A:

    def foo2(self):
        foo1()
        foo1.count[self] += 1



a = A()
b = A()

a.foo2()
a.foo2()
b.foo2()

print(foo1.count)

output:

Hi
Hi
Hi
defaultdict(<class 'int'>, {<__main__.A object at 0x000001E59759ABE0>: 2, <__main__.A object at 0x000001E596AFCD30>: 1})