diff --git a/main.py b/main.py
new file mode 100644
index 0000000..31f6cfc
--- /dev/null
+++ b/main.py
@@ -0,0 +1,7 @@
+def main() -> None:
+    """main function."""
+    pass
+
+
+if __name__ == "__main__":
+    main()