How do I check (at runtime) if one class is a subclass of another?

Question

Let\'s say that I have a class Suit and four subclasses of suit: Heart, Spade, Diamond, Club.

class Suit:
   ...
class Heart(Suit):
   ...
class Spade(Suit):         


        

Answer 1

According to the Python doc, we can also use class.__mro__ attribute or class.mro() method:

class Suit:
    pass
class Heart(Suit):
    pass
class Spade(Suit):
    pass
class Diamond(Suit):
    pass
class Club(Suit):
    pass

>>> Heart.mro()
[, , ]
>>> Heart.__mro__
(, , )

Suit in Heart.mro()  # True
object in Heart.__mro__  # True
Spade in Heart.mro()  # False