@@ -0,0 +1,45 @@
+class WrongTypeAnnotationError(TypeError):
+    pass
+
+
+class TypeGuard:
+    def __init__(self, label: str = "TypeGuard"):
+        self.label = label
+
+    def __call__(self, func):
+        def wrapper(*args, **kwargs):
+            print(f"{self.label}: Type checking")
+            print(f"Function: {func.__name__}")
+            print(f"Type annotations: {func.__annotations__}")
+            for k, v in func.__annotations__.items():
+                if k in kwargs:
+                    if not isinstance(kwargs[k], v):
+                        raise WrongTypeAnnotationError(
+                            f"Argument '{k}' must be of type {v.__name__}, "
+                            f"but got {type(kwargs[k]).__name__}"
+                        )
+            result = func(*args, **kwargs)
+            return result
+
+        return wrapper
+
+
+@TypeGuard(label="Custom Type Guard")
+def add(*, x: int, y: int) -> int:
+    return x + y
+
+
+def main():
+    x = 6
+    y = "Canbula"
+    try:
+        result = add(x=x, y=y)
+        print(f"Result: {result}")
+    except TypeError as e:
+        print(f"TypeError: {e}")
+    except Exception as e:
+        print(f"Error ({e.__class__.__name__}): {e}")
+
+
+if __name__ == "__main__":
+    main()