diff --git a/fucntions/string_utils.py b/fucntions/string_utils.py
new file mode 100644
index 00000000..5070017d
--- /dev/null
+++ b/fucntions/string_utils.py
@@ -0,0 +1,7 @@
+def uppercase(s):
+    if s is None:
+        raise TypeError("Input cannot be None")
+    return s.upper()
+
+def reverse(s):
+    return s[::-1]