Make Iterable deprecation warning on subclassing

Author: Yobmod

git/util.py

@@ -1017,10 +1017,12 @@ def __delitem__(self, index: Union[SupportsIndex, int, slice, str]) -> Any:
 class IterableClassWatcher(type):
     def __init__(cls, name, bases, clsdict):
         for base in bases:
-            if type(base) == cls:
-                warnings.warn("GitPython Iterable is deprecated due to naming clash. Use IterableObj instead",
-                              DeprecationWarning)
-        super(IterableClassWatcher, cls).__init__(name, bases, clsdict)
+            if type(base) == IterableClassWatcher:
+                warnings.warn(f"GitPython Iterable subclassed by {name}. "
+                              "Iterable is deprecated due to naming clash, "
+                              "Use IterableObj instead \n",
+                              DeprecationWarning,
+                              stacklevel=2)
 
 
 class Iterable(object):

t.py

@@ -1,7 +1,15 @@
+import warnings
+
+
 class Watcher(type):
     def __init__(cls, name, bases, clsdict):
-        [print("ooooo") for base in bases if issubclass(base, name)]
-        super(Watcher, cls).__init__(name, bases, clsdict)
+        for base in bases:
+            if type(base) == Watcher:
+                warnings.warn(f"GitPython Iterable subclassed by {name}. "
+                              "Iterable is deprecated due to naming clash, "
+                              "Use IterableObj instead \n",
+                              DeprecationWarning,
+                              stacklevel=2)
 
 
 class SuperClass(metaclass=Watcher):
@@ -15,5 +23,6 @@ class SubClass0(SuperClass):
 class SubClass1(SuperClass):
     print("test")
 
+
 class normo():
     print("wooo")