Assert to make mypy happy

2020-06-27 15:51:00 +02:00 · 2020-06-27 15:51:00 +02:00 · f21a7beb41
commit f21a7beb41
parent e5dad02397
1 changed files with 1 additions and 0 deletions
--- a/relational/parser.py
+++ b/relational/parser.py
@ -287,6 +287,7 @@ def parse_tokens(expression: List[Union[list, str]]) -> Node:

    # The list contains only 1 string. Means it is the name of a relation
    if len(expression) == 1:
+        assert isinstance(expression[0], str)
        if not rtypes.is_valid_relation_name(expression[0]):
            raise ParserException(
                f'{expression[0]!r} is not a valid relation name')