Added more test files from lectures.

test18.py

@@ -0,0 +1,26 @@
+class C:
+    @classmethod
+    def class_method(cls):
+        print("Called class_method with cls:", cls)
+
+    def instance_method(self):
+        print("Called instance_method with self:", self)
+
+    @staticmethod
+    def static_method():
+        print("Called static_method")
+
+# Accessing class attributes
+class_method_obj = C.__dict__["class_method"]
+instance_method_obj = C.__dict__["instance_method"]
+static_method_obj = C.__dict__["static_method"]
+
+# Calling the methods directly (without transformation)
+class_method_obj.__func__(C)  # Output: Called class_method with cls: <class '__main__.C'>
+instance_method_obj.__func__(1)  # Output: Called instance_method with self: <__main__.C object at 0x7f8d7c1e4d90>
+static_method_obj.__func__()  # Output: Called static_method
+
+# Accessing the methods through class attribute reference (with transformation)
+C.class_method()  # Output: Called class_method with cls: <class '__main__.C'>
+C.instance_method(1)  # Raises TypeError: instance_method() missing 1 required positional argument: 'self'
+C.static_method()  # Output: Called static_method