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设置币安的双向持仓模式，这个是FMZ上给出的教程，跑模拟出错
def main():
ret = exchange.IO("api", "POST", "/fapi/v1/positionSide/dual", "dualSidePosition=false")
Log(ret)
出错信息如下：
IO() takes from 2 to 3 positional arguments but 5 were given
请问如何解决？
感谢
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