Visual Studio Code: run Python file with arguments

Visual Studio Code only supports one launch.json file. However, it supports two or more configurations, and they appear in the left-hand menu/pane’s drop down list (instead of “No Configurations”).

In the DEBUG pane, either click the Config button circled in red above or click the blue link “create launch.json file”:

Click it and it creates a launch.json file with debugging configurations. Edit this file and add the args in this key-pair format AND add multiple for different args including Variable Substitution!

{
    // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: Current File with my args",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "args": [
                "--username", "Jeremy",
                "--account", "Stackoverflow"
            ],
            "console": "integratedTerminal"
        },
        {
            "name": "Python: Current File with UserName arg",
            "type": "python",
            "request": "launch",
            "program": "${file}",
            "args": ["${env:USERNAME}"],
            "console": "integratedTerminal"
        }
    ]
}

Put a breakpoint in your Python script, for example on the first line under def main(...) and then press F5 or click Run Menu > Start Debugging.