Since Python v3.3, you can use both the `@staticmethod` and `@abstractmethod` decorators on the same class function (and the `@abstractstaticmethod` decorator has been depreciated).
import abc class MyClass: @staticmethod @abstractmethod def my_func(): pass
Checking If A Class Is A Subclass Of Another
You can check if one class is a sub-class of another with the
class ParentClass: pass class ChildClass(ParentClass): pass class StandaloneClass: pass print(issubclass(ChildClass, ParentClass)) # stdout: True print(issubclass(StandaloneClass, ParentClass)) # stdout: False # Works with variables which are assigned to a class too my_class = ChildClass print(issubclass(my_class, ParentClass)) # stdout: True
In Python, classes can be assigned variables, either statically or dynamically. The important difference between assigning variable to A class and assigning variables to an INSTANCE of a class is that class variables are shared between all variables/instances of that class, while instance variables are unique to that particular instance of the class.
class TestClass: pass # Create two class variables (not here that we are NOT) # creating instances, there are no brackets () at the end) test_class_1 = TestClass test_class_2 = TestClass # Assign a value to a class variable test_class_1.my_var = 2 # The other class variable now has this value too! print(test_class_2.my_var) # stdout: 2 test_class_2.my_var = 3 # The original classes variable has changed, as the variable is shared # between all identical class objects print(test_class_1.my_var) # stdout: 3
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