Simple code for understanding `__getattr__` and `__getattribute__`

getattr__vs__getattribute.py

class MyClass():
    def __init__(self):
        self.foo = "foo"

    # Ignored.
    def __getattr__(self, attribute):
        print("__getattr__ for {} called".format(attribute))

    def __getattribute__(self, attribute):
        print("__getattribute__ for {} called".format(attribute))

class MyClassA():
    def __init__(self):
        self.foo = "foo"

    def __getattr__(self, attribute):
        print("__getattr__ for {} called".format(attribute))

obj = MyClass()
obj.foo  # handled by __getattribute__
obj.a    # handled by __getattribute__

ooobj = MyClassA()
ooobj.foo  # Nothing happens
ooobj.a    # handled by __getattr__