bmv126
diff --git a/‎timeit_decorator.py‎
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+# filename: timeit_decorator.py
+# Run: python timeit_decorator.py
+
+import time
+from functools import wraps
+
+def timeit(func):
+    @wraps(func)
+    def wrapper(*args, **kwargs):
+        start = time.perf_counter()
+        result = func(*args, **kwargs)
+        end = time.perf_counter()
+        print(f"{func.__name__} took {(end-start):.6f}s")
+        return result
+    return wrapper
+
+@timeit
+def fib(n):
+    if n < 2:
+        return n
+    return fib(n-1) + fib(n-2)
+
+if __name__ == "__main__":
+    # Small n to avoid too long recursion
+    print("fib(10) =", fib(10))
+  
+# Note: fib is recursive and intentionally slow — useful to show timing.