Simplified widgets.Select._choice_has_empty_value().
@@ -681,7 +681,7 @@ class Select(ChoiceWidget):
def _choice_has_empty_value(choice):
"""Return True if the choice's value is empty string or None."""
value, _ = choice
- return (isinstance(value, str) and not value) or value is None
+ return value is None or value == ''
def use_required_attribute(self, initial):
"""
