Fixed #28906 -- Removed unnecessary bool() calls.

django/forms/forms.py

@@ -139,7 +139,7 @@ class BaseForm:
         if self._errors is None:
             is_valid = "Unknown"
         else:
-            is_valid = self.is_bound and not bool(self._errors)
+            is_valid = self.is_bound and not self._errors
         return '<%(cls)s bound=%(bound)s, valid=%(valid)s, fields=(%(fields)s)>' % {
             'cls': self.__class__.__name__,
             'bound': self.is_bound,

django/forms/widgets.py

@@ -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 bool(value)) or value is None
+        return (isinstance(value, str) and not value) or value is None
 
     def use_required_attribute(self, initial):
         """