isinstance() and issubclass() return conflicting results

Question

>>> class Hello:
    pass

and

>>> isinstance(Hello,object)
True
>>> issubclass(Hello,object)
False
>         


        

Answer 1

So basically isinstance(new_object, some_class) returns True if the object is an instantiated class of some_class. In other words, new_object is an some_class() object. issubclass checks if the object has a subclass of some_class.

Better explained with a simple example that makes perfect sense:

class some_class():
  pass

class new_object_class(some_class):
  pass

instance_object = new_object_class()

isinstance(instance_object, new_object_class) == True
issubclass(instance_object, some_class) == True

isinstance(new_object_class,some_class) == True
issubclass(new_object_class,some_class) == True

No need for false tests to explain this.