Question

How to use issubclass to determines if one class is derived from another in Python

Answer 1

class A:
    def me(self):
        print("Class A")


class B(A):
    def me(self):
        print("Class B")


o = B()
o.me()

if issubclass(B, A):
    print("issubclass(B, A) - yes")
else:
    print("issubclass(B, A) - no")

if issubclass(A, B):
    print("issubclass(A, B) - yes")
else:
    print("issubclass(A, B) - no")

if issubclass(A, A):
    print("issubclass(A, A) - yes")
else:
    print("issubclass(A, A) - no")

if issubclass(B, B):
    print("issubclass(B, B) - yes")
else:
    print("issubclass(B, B) - no")


'''
run:
 
Class B
issubclass(B, A) - yes
issubclass(A, B) - no
issubclass(A, A) - yes
issubclass(B, B) - yes

'''

 

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