Refs #33476 -- Refactored problematic code before reformatting by Black.

In these cases Black produces unexpected results, e.g.

def make_random_password(
    self,
    length=10,
    allowed_chars='abcdefghjkmnpqrstuvwxyz' 'ABCDEFGHJKLMNPQRSTUVWXYZ' '23456789',
):

or

cursor.execute("""
SELECT ...
""",
    [table name],
)

tests/cache/tests.py

@@ -70,8 +70,7 @@ def empty_response(request):
 
 
 KEY_ERRORS_WITH_MEMCACHED_MSG = (
-    'Cache key contains characters that will cause errors if used with '
-    'memcached: %r'
+    'Cache key contains characters that will cause errors if used with memcached: %r'
 )