Implement UUID Generation Function

uuid_generator.py

@@ -0,0 +1,42 @@
+import uuid
+
+def generate_uuid() -> str:
+    """
+    Generate a universally unique identifier (UUID) using a cryptographically secure random number generator.
+
+    Returns:
+        str: A UUID following RFC 4122 version 4 format, consisting of 36 characters with hyphens.
+    """
+    return str(uuid.uuid4())
+
+if __name__ == "__main__":
+    # Test the generate_uuid function
+    import random
+    import string
+
+    def random_string(length: int) -> str:
+        """Generate a random string of given length."""
+        letters = string.ascii_lowercase
+        return "".join(random.choice(letters) for _ in range(length))
+
+    def generate_and_validate_uuid() -> None:
+        """Generate and validate a UUID."""
+        generated_uuid = generate_uuid()
+
+        # Verify the generated UUID is a valid 36-character string
+        assert len(generated_uuid) == 36, "UUID should be a 36-character string"
+
+        # Confirm the generated UUID follows RFC 4122 version 4 format
+        assert generated_uuid.count("-") == 4, "UUID should have correct hyphen placement"
+
+        # Ensure two consecutive UUID generations produce different values
+        second_generated_uuid = generate_uuid()
+        assert generated_uuid != second_generated_uuid, "Two consecutive UUID generations should produce different values"
+
+        # Validate the UUID contains only hexadecimal characters and hyphens
+        for char in generated_uuid:
+            assert char in "-0123456789abcdef", "UUID should contain only hexadecimal characters and hyphens"
+
+    # Test the generate_uuid function multiple times
+    for _ in range(10):
+        generate_and_validate_uuid()