How do I set Python interpreter options when debugging with Visual Studio Code?

Question

I am trying to debug an IronPython script (my company requires IronPython for some tasks) using Visual Studio Code. The version of IronPython has to be executed using the -X:Frames option.

Here's how I would run the script from the command line:

ipy -X:Frames my_script.py

Adding -X:Frames to the "args" launcher property makes it an argument for the script instead of the interpreter which is incorrect:

ipy my_script.py -X:Frames

Is there a way to pass arguments to the interpreter itself?

If it helps, here's my launch configuration:

"launch": {
    "configurations": [
        {
            "name": "My Tests",
            "type": "python",
            "request": "launch",
            "stopOnEntry": false,
            "pythonPath": "ipy",
            "program": "C:\\temp\\my_script.py",
            "args": ["-X:Frames"],
            "cwd": "C:\\temp",
            "env": {},
            "envFile": "",
            "debugOptions": [
                "RedirectOutput"
            ]
        }
    ]
},

IIRC, when I had to do something similar, there was an open feature request on this, and the workaround was to create a .cmd (Windows) or .sh (macOS/Linux) launcher script and put the path to that as your pythonPath. (And, even better, you had to create slightly different scripts for debugger pythonPath and environment pythonPath…) Hopefully there's a better answer now (or I'm remembering wrong), but if not… that should still work. — abarnert
– abarnert, Commented Jun 18, 2018 at 23:47

Brett Cannon · Accepted Answer · 2018-06-19 19:28:58Z

2

Currently there is no way to pass explicit arguments to the interpreter and not the script itself. See this feature request and please leave a +1 reaction to vote for your desire to see it implemented.

answered Jun 19, 2018 at 19:28

Brett Cannon

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