Question

I want to create a class that doesn’t gives an Attribute Error on call of any method that may or may not exists:

My class:

class magic_class:
    ...
    # How to over-ride method calls
    ...

Expected Output:

ob = magic_class()
ob.unknown_method()
# Prints 'unknown_method' was called

ob.unknown_method2()
# Prints 'unknown_method2' was called

Now, unknown_method and unknown_method2 doesn’t actually exists in the class, but how can we intercept the method call in python ?

Answer 1

Overwrite the __getattr__() magic method:

class MagicClass(object):
    def __getattr__(self, name):
        def wrapper(*args, **kwargs):
            print "'%s' was called" % name
        return wrapper

ob = MagicClass()
ob.unknown_method()
ob.unknown_method2()

prints

'unknown_method' was called
'unknown_method2' was called