def __init__(self, child, context):
        self.expr = None
        if child:
            assert len(child) in 1
            self.arguments = child[0]
        else:
            self.arguments = []
        super().__init__(context)
dataset/ETHPy150Open tailhook/pyzza/pyzza/parser.py/Call.__init__/operator `==` -> `in`