Merged Tanya's files + final lint check

term_frag_sel/cli.py

@@ -18,6 +18,9 @@ def main(args: argparse.Namespace):
     Args:
         args (parser): list of arguments from CLI.
     """
+    if not isinstance(args, argparse.Namespace):
+        raise TypeError("Input should be argparse.Namespace")
+
     # Create or wipe output file
     with open(args.output, "w", encoding="utf-8") as _:
         pass