Method __and__

django/db/models/expressions.py:97–102

(self, other)

        return self._combine(other, self.POW, False)

    def __and__(self, other):
        if getattr(self, "conditional", False) and getattr(other, "conditional", False):
            return Q(self) & Q(other)
        raise NotImplementedError(
            "Use .bitand(), .bitor(), and .bitxor() for bitwise logical operations."
        )

    def bitand(self, other):
        return self._combine(other, self.BITAND, False)