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How to use _combine method in molecule

Best Python code snippet using molecule_python

expressions.py

Source:expressions.py

...19    def __init__(self, children=None, connector=None, negated=False):20        if children is not None and len(children) > 1 and connector is None:21            raise TypeError('You have to specify a connector.')22        super(ExpressionNode, self).__init__(children, connector, negated)23    def _combine(self, other, connector, reversed, node=None):24        if reversed:25            obj = ExpressionNode([other], connector)26            obj.add(node or self, connector)27        else:28            obj = node or ExpressionNode([self], connector)29            obj.add(other, connector)30        return obj31    ###################32    # VISITOR METHODS #33    ###################34    def prepare(self, evaluator, query, allow_joins):35        return evaluator.prepare_node(self, query, allow_joins)36    def evaluate(self, evaluator, qn, connection):37        return evaluator.evaluate_node(self, qn, connection)38    #############39    # OPERATORS #40    #############41    def __add__(self, other):42        return self._combine(other, self.ADD, False)43    def __sub__(self, other):44        return self._combine(other, self.SUB, False)45    def __mul__(self, other):46        return self._combine(other, self.MUL, False)47    def __div__(self, other):48        return self._combine(other, self.DIV, False)49    def __mod__(self, other):50        return self._combine(other, self.MOD, False)51    def __and__(self, other):52        return self._combine(other, self.AND, False)53    def __or__(self, other):54        return self._combine(other, self.OR, False)55    def __radd__(self, other):56        return self._combine(other, self.ADD, True)57    def __rsub__(self, other):58        return self._combine(other, self.SUB, True)59    def __rmul__(self, other):60        return self._combine(other, self.MUL, True)61    def __rdiv__(self, other):62        return self._combine(other, self.DIV, True)63    def __rmod__(self, other):64        return self._combine(other, self.MOD, True)65    def __rand__(self, other):66        return self._combine(other, self.AND, True)67    def __ror__(self, other):68        return self._combine(other, self.OR, True)69    def prepare_database_save(self, unused):70        return self71class F(ExpressionNode):72    """73    An expression representing the value of the given field.74    """75    def __init__(self, name):76        super(F, self).__init__(None, None, False)77        self.name = name78    def __deepcopy__(self, memodict):79        obj = super(F, self).__deepcopy__(memodict)80        obj.name = self.name81        return obj82    def prepare(self, evaluator, query, allow_joins):...

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