push

lib/classmethod.py

@@ -0,0 +1,30 @@
+from __future__ import annotations
+
+
+class Classmethod:
+    def __init__(self, func):
+        self.func = func
+        self._attribute_name: str = getattr(func, "__name__", "<classmethod>")
+
+    def __set_name__(self, owner, name: str):
+        self._attribute_name = name
+
+    def __get__(self, instance, owner=None):
+        if owner is None:
+            owner = type(instance)
+        func = self.func
+        attr = self._attribute_name
+
+        def bound(*args, **kwargs):
+            return func(owner, *args, **kwargs)
+
+        bound.__name__ = attr
+        bound.__qualname__ = f"{owner.__qualname__}.{attr}"
+        return bound
+
+    def __set__(self, instance, value):
+        raise AttributeError("Classmethod reassigend")
+
+    def __repr__(self) -> str:
+        return f"Classmethod({self.func!r})"
+Classmthod = Classmethod