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Diffstat (limited to 'lib/sqlalchemy/sql/expression.py')
| -rw-r--r-- | lib/sqlalchemy/sql/expression.py | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/lib/sqlalchemy/sql/expression.py b/lib/sqlalchemy/sql/expression.py index 3dc8dfea4..aa912a0f6 100644 --- a/lib/sqlalchemy/sql/expression.py +++ b/lib/sqlalchemy/sql/expression.py @@ -3723,6 +3723,7 @@ class BinaryExpression(ColumnElement): # refer to BinaryExpression directly and pass strings if isinstance(operator, basestring): operator = operators.custom_op(operator) + self._orig = (left, right) self.left = _literal_as_text(left).self_group(against=operator) self.right = _literal_as_text(right).self_group(against=operator) self.operator = operator @@ -3735,9 +3736,9 @@ class BinaryExpression(ColumnElement): self.modifiers = modifiers def __nonzero__(self): - try: - return self.operator(hash(self.left), hash(self.right)) - except: + if self.operator in (operator.eq, operator.ne): + return self.operator(hash(self._orig[0]), hash(self._orig[1])) + else: raise TypeError("Boolean value of this clause is not defined") @property |