Python Abstract Override can be done with different func params but same name, no error is raised.

test_abstract.py

import abc

class A(abc.ABC):
  @abc.abstractmethod
  def foo(self):
    print("abstract foo()")

class B(A):
  def foo(self, who:str): # Note: function signature is different
    print("hello", who)


b = B()
b.foo("bar") # hello bar

Also, a class inherit from abc.ABC can be instantiated, provided that it doesn't contain abstract methods.

# Test if abc.ABC class can be instantiated
import abc

class A(abc.ABC):
  def foo(self):
    print("bar")

a = A()
a.foo() # bar