reflection for checking methods

metagpt/utils/reflection.py

@@ -0,0 +1,20 @@
+"""
+class tools, including method inspection, class attributes, inheritance relationships, etc.
+"""
+
+
+def check_methods(C, *methods):
+    """
+    Check if the class has methods. borrow from _collections_abc.
+    Useful when implementing implicit interfaces, such as defining an abstract class, isinstance can be used for determination without inheritance.
+    """
+    mro = C.__mro__
+    for method in methods:
+        for B in mro:
+            if method in B.__dict__:
+                if B.__dict__[method] is None:
+                    return NotImplemented
+                break
+        else:
+            return NotImplemented
+    return True