"X takes 1 positional argument but 2 were given" in command line but not in Spyder

[sebastiang42]

Issue Report Checklist

• [x ] Searched the issues page for similar reports
• [ x] Read the relevant sections of the Spyder Troubleshooting Guide and followed its advice
• [x ] Reproduced the issue after updating with conda update spyder (or pip, if not using Anaconda)
• [ ] Could not reproduce inside jupyter qtconsole (if console-related)
• [x ] Tried basic troubleshooting (if a bug/error)
  • [ ] Restarted Spyder
  • [ ] Reset preferences with spyder --reset
  • [ ] Reinstalled the latest version of Anaconda
  • [ ] Tried the other applicable steps from the Troubleshooting Guide
• [x ] Completed the Problem Description, Steps to Reproduce and Version sections below

Problem Description

I have a script where I'm opening a websocket connection to stream Bitcoin price data from Bybit, and the script runs as expected when I run it in Spyder. However, when I try to run it in cmd or powershell, I get "X takes 1 positional argument but 2 were given" errors, and I can't figure out why. The methods in my websocket class that are giving the errors all include the "self" parameter where they're defined, e.g.: def _on_open(self): '''Log WS open.''' self.logger.debug('WebSocket opened.') self.opened = True

What steps reproduce the problem?

1. Run the script in cmd or powershell instead of within Spyder.

What is the expected output? What do you see instead?

I'm currently running a test script that opens the websocket connection, waits five seconds, then closes it again. When I run it in Spyder, I see:

2021-10-03 16:26:13 - Bybit_WS - INFO - Initializing WebSocket. 2021-10-03 16:26:14 - Bybit_WS - INFO - Subscription to trade.BTCUSD successful. 2021-10-03 16:26:19 - Bybit_WS - INFO - WebSocket closed.

but when I run it in, e.g., cmd, I see:

2021-10-03 16:51:11 - Bybit_WS - INFO - Initializing WebSocket. 2021-10-03 16:51:12 - websocket - ERROR - error from callback <bound method MyWebSocket._on_open of <Bybit_WS.MyWebSocket object at 0x000001D0FFD89790>>: _on_open() takes 1 positional argument but 2 were given 2021-10-03 16:51:12 - websocket - ERROR - error from callback <bound method MyWebSocket._on_message of <Bybit_WS.MyWebSocket object at 0x000001D0FFD89790>>: _on_message() takes 2 positional arguments but 3 were given 2021-10-03 16:51:13 - websocket - ERROR - error from callback <bound method MyWebSocket._on_message of <Bybit_WS.MyWebSocket object at 0x000001D0FFD89790>>: _on_message() takes 2 positional arguments but 3 were given 2021-10-03 16:51:15 - websocket - ERROR - error from callback <bound method MyWebSocket._on_message of <Bybit_WS.MyWebSocket object at 0x000001D0FFD89790>>: _on_close() takes 1 positional argument but 2 were given

Versions

• Spyder version: 5.05
• Python version: 3.8.8
• Qt version: 5.9.7
• PyQt version: 5.9.2
• Operating System name/version: Windows 10

[ccordoba12]

Hey @sebastiang42, thanks for reporting. We need a simple and reproducible code example from you so we can test and debug this problem in our side. Otherwise it won't be possible to help you, sorry.

[sebastiang42]

Hi again,

After digging even deeper, I finally found a clue that resolved the problem. I'm not exactly sure why, but rolling back my websocket-client package from version 0.58.0 to 0.57.0 fixed the problem.