How to read number of methods in a class in python? [duplicate]

The quick way is to simply run the built in dir() function on a class.

Any non-dunder method is typically meant to be used by the programmer.

>>> dir(list)
['__add__', '__class__', '__contains__', '__delattr__', '__delitem__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__getitem__', '__gt__', '__hash__', '__iadd__', '__imul__', '__init__', '__init_subclass__', '__iter__', '__le__', '__len__', '__lt__', '__mul__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__reversed__', '__rmul__', '__setattr__', '__setitem__', '__sizeof__', '__str__', '__subclasshook__', 'append', 'clear', 'copy', 'count', 'extend', 'index', 'insert', 'pop', 'remove', 'reverse', 'sort']

let's assume you have a module my_module.py:

class MyClass1:
    def __init__(self, param1, param2):
        pass

    def one_method(self):
        pass



class MyClass2:
    def __init__(self):
        pass

    def one_method(self):
        pass

    def two_method(self):
        pass

if you want the number of user-defined methods from each class you can use:

import inspect

import my_module

class_name_obj = inspect.getmembers(my_module, inspect.isclass) 
{c: len([m for m in  i.__dict__ if callable(getattr(i, m))]) for c, i in class_name_obj}

output:

{'MyClass1': 2, 'MyClass2': 3}