[Python] How to Decorate Inherited Methods Using a Custom Metaclass in Python?

I’m using a custom metaclass, to decorate methods of a class. However, it currently only decorates methods defined directly in the class and not those inherited from the parent class.

My classes are structured as follows:

class Abstract1(ABC):

class A(Abstract1):
def fun1(self):
def fun2(self):

class DecoMeta(ABCMeta):

class B(A, metaclass=DecoMeta):
def hello(self):


My DecoMeta class looks like following:

class DecoMeta(ABCMeta):
""" Decorator class
"""
def __new__(mcs, name: str, bases: tuple, attrs: dict):
for attr_name, attr_value, in attrs.items():
if isinstance(attr_value, types.FunctionType):
attrs[attr_name] = mcs.deco(attr_value)

return super(DecoMeta, mcs).__new__(mcs, name, bases, attrs)

@classmethod
def deco(mcs, func):
""" Decorate func
"""
async def wrapper(*args, **kwargs):
result = await func(*args, **kwargs)
# print(args[0].__dict__.keys())
args[0].some_function(). # i.e. self.some_function()
return result
return wrapper


When I print args[0].dict.keys() it only prints out the functions defined in class B. So that means, decoMeta only decorates those functions(in this case hello()). I want to decorate all functions defined in the parent class i.e. class A(like fun1() and fun2()) using this DecoMeta. Is there a way to do it?

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