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on_error() missing 1 required positional argument: 'error'
See original GitHub issue- System:
Linux 4.4.0-127-generic #153-Ubuntu SMP Sat May 19 10:58:46 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux - Python3:
Python 3.5.2 - Sample-market-maker:
https://github.com/BitMEX/sample-market-maker/releases/tag/v1.5 - Running Command:
marketmaker - Pip Freeze:
bitmex-market-maker==1.5
bitmex-ws==0.3.1
websocket-client==0.52.0
...
Error Message:
2018-10-03 23:18:00,134 - INFO - market_maker - BitMEX Market Maker Version: v1.1
2018-10-03 23:18:00,134 - INFO - ws_thread - Connecting to wss://testnet.bitmex.com/realtime?subscribe=quote:XBTUSD,trade:XBTUSD,instrument,order:XBTUSD,execution:XBTUSD,margin,position
2018-10-03 23:18:00,135 - INFO - ws_thread - Authenticating with API Key.
2018-10-03 23:18:00,136 - INFO - ws_thread - Started thread
2018-10-03 23:18:00,138 - ERROR - _logging - error from callback <bound method BitMEXWebsocket.__on_error of <market_maker.ws.ws_thread.BitMEXWebsocket object at 0x7f93a2b3e160>>: __on_error() missing 1 required positional argument: 'error'
2018-10-03 23:18:00,139 - INFO - ws_thread - Websocket Closed
2018-10-03 23:18:05,142 - ERROR - ws_thread - Couldn't connect to WS! Exiting.
- By the way, I am not sure if the version number is wrong. I downloaded the
v1.5release but gotv1.1while running.
Issue Analytics
- State:
- Created 5 years ago
- Comments:26
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I have found why, and I guess it would be applied to most people. Go to here and adding a default value for the parameter
error.Also, if you encounter a new error(which I expect to happen) of:
2018-10-10 01:57:13,537 - ERROR - _logging - error from callback <bound method BitMEXWebsocket.__on_message of <market_maker.ws.ws_thread.BitMEXWebsocket object at 0x7ff2e327c630>>: __on_message() takes 2 positional arguments but 3 were givenGo to here, change it todef __on_message(self, ws, message):.The parameter definiation of the
on_messagecallback function of the websocketApp is here. It is clear that it will passselfto the callback, so we need to prepare a positional argument for it. But for theon_errorfunction, websocketApp takes theerrorargument as optional instead of positional. That’s why causes the first issue.You’re a life-saver! I fixed this issue, as noted by mikeghen, by running the following commands: