markers.py 文件源码

def do_boolop(self, node):
        result = self.evaluate(node.values[0])
        is_or = node.op.__class__ is ast.Or
        is_and = node.op.__class__ is ast.And
        assert is_or or is_and
        if (is_and and result) or (is_or and not result):
            for n in node.values[1:]:
                result = self.evaluate(n)
                if (is_or and result) or (is_and and not result):
                    break
        return result