Make hash raise an error

2020-08-12 15:20:29 +07:00 · 2020-08-12 15:20:29 +07:00 · bd58442912
parent 8d49b393c8
commit bd58442912
1 changed files with 2 additions and 1 deletions
--- a/relational/relation.py
+++ b/relational/relation.py
@ -52,7 +52,8 @@ class Relation:
    An empty relation needs a header, and can be filled using the insert()
    method.
    '''
-    __hash__ = None #  type: None
+    def __hash__(self):
+        raise NotImplementedError()

    def __init__(self, filename: Optional[Union[str, Path]] = None) -> None:
        self._readonly = False