lint: various non-semantic fixes

app/brm/utils.py

@@ -3,18 +3,18 @@ from __future__ import annotations
 from typing import Any
 
 
-def is_integer(n: Any) -> bool:
+def is_integer(contender: Any) -> bool:
     """
     Determine if a string (or other object type that can be converted automatically) represents an integer.
 
     Thanks to https://note.nkmk.me/en/python-check-int-float/.
 
-    :param n: object to test
+    :param contender: object to test
     :return: true if it's an integer
     """
     try:
-        float(n)
+        float(contender)
     except ValueError:
         return False
     else:
-        return float(n).is_integer()
+        return float(contender).is_integer()