How do I pass command line arguments to Python from VS in Debug mode?

Question

I am working with Python Tools for Visual Studio. (Note, not IronPython.)

I need to work with arguments passed to the module from the command line. I see how to start the module in Debug by right-clicking in the code window and selecting "Start with Debugging". But this approach never prompts me for command line arguments, and len(sys.argv) always == 1.

How do I start my module in debug mode and also pass arguments to it so sys.argv has more than 1 member?

Answer 1

The steps are shown in the image linked here:

1. Go to debug mode in VS Code
2. Click on the settings icon (gear icon). If it does not exist this will create a launch.json
3. In the json, in any of the configuration, add the args json parameter:

{
    "name": "Python: Terminal (integrated)",
    "type": "python",
    "request": "launch",
    "stopOnEntry": true,
    "pythonPath": "${config:python.pythonPath}",
    "program": "${file}",
    "cwd": "",
    "console": "integratedTerminal",
    "env": {},
    "args": [
        "input2.csv",
        "output2.csv"
    ],
    "envFile": "${workspaceFolder}/.env",
    "debugOptions": [],
    "internalConsoleOptions": "neverOpen"
}

Make sure you choose that environment while debugging

Answer 2

1. Go to your project properties, either by right-clicking on the project and picking "Properties" or by picking Properties from the Project menu.

2. Click on Debug, then enter your arguments into the "Script Arguments" field.

3. Save.