on_close() missing 1 required positional argument: 'ws'

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• 问题描述

  class Something():def on_message(self,ws, message):pass...def main(self):websocket.enableTrace(True)ws = websocket.WebSocketApp("wss://stream.binance.com:9443/ws/btcusdt@trade",on_message = self.on_message,on_error = self.on_error,on_close = self.on_close)
  

  将websocket实例写入一个类，此时调用self.on_message出现如题问题。

• 解决方案

  class Something():def on_message(self, message): # 将ws去掉，self占位wspass...def main(self):websocket.enableTrace(True)ws = websocket.WebSocketApp("wss://stream.binance.com:9443/ws/btcusdt@trade",on_message = self.on_message,on_error = self.on_error,on_close = self.on_close)
  

• References

1. Python3 Websocket Callback cannot assign Class Member Functions
2. websocket-client==0.49.0 -> _on_open() missing 1 required positional argument: ‘ws’ #30

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