diff --git a/utils.py b/utils.py
new file mode 100644
index 0000000000..d213120c84
--- /dev/null
+++ b/utils.py
@@ -0,0 +1,16 @@
+import random
+
+def alternating_case(input_string: str) -> str:
+    """
+    Converts a string to alternating random case.
+
+    :param input_string: The string to convert.
+    :return: The input string with each alphabetic character in a random case.
+    """
+    result = ""
+    for char in input_string:
+        if char.isalpha():
+            result += random.choice(["upper", "lower"])(char)
+        else:
+            result += char
+    return result
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