add support for abstract class and static methods #5867

Lib/abc.py

@@ -25,6 +25,46 @@ def abstractmethod(funcobj):
     return funcobj
 
 
+class abstractclassmethod(classmethod):
+    """A decorator indicating abstract classmethods.
+
+    Similar to abstractmethod.
+
+    Usage:
+
+        class C(metaclass=ABCMeta):
+            @abstractclassmethod
+            def my_abstract_classmethod(cls, ...):
+                ...
+    """
+
+    __isabstractmethod__ = True
+
+    def __init__(self, callable):
+        callable.__isabstractmethod__ = True
+        super().__init__(callable)
+
+
+class abstractstaticmethod(staticmethod):
+    """A decorator indicating abstract staticmethods.
+
+    Similar to abstractmethod.
+
+    Usage:
+
+        class C(metaclass=ABCMeta):
+            @abstractstaticmethod
+            def my_abstract_staticmethod(...):
+                ...
+    """
+
+    __isabstractmethod__ = True
+
+    def __init__(self, callable):
+        callable.__isabstractmethod__ = True
+        super().__init__(callable)
+
+
 class abstractproperty(property):
     """A decorator indicating abstract properties.