Unable to debug tests: Invalid message: Found duplicate in "env": PATH

[DudeNr33]

Type: Bug

Plugin Versions

Python: v2024.2.1
Python Debugger: v2024.2.0

Behaviour

Expected vs. Actual

Expected: When selecting "debug test" from test runner or the editor, the debugger should start.

Actual: Debugger fails to start. Popup dialog with message "Invalid message: Found duplicate in "env": PATH." is displayed.

Steps to reproduce:

1. Open a new folder in VS Code
2. Add a single file with a dummy unit test like this:

import unittest


class SomeTest(unittest.TestCase):
    def test_anything(self):
        self.assertTrue(True)

3. Configure Python tests
4. Try to debug the test

Diagnostic data

• Python version (& distribution if applicable, e.g. Anaconda): 3.8.10
• Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Global
• Value of the python.languageServer setting: Default

Output for Python in the Output panel (View→Output, change the drop-down the upper-right of the Output panel to Python)

2024-03-12 17:28:25.416 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.421 [debug] starting server as TCP
2024-03-12 17:28:25.421 [debug] starting server as TCP
2024-03-12 17:28:25.423 [info] Using launch configuration in workspace folder.
2024-03-12 17:28:25.423 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.423 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.464 [debug] Activation Commands received undefined for shell cmd, resource c:\UserData\z003emnm\temp\duplicate_env_repro\test1 and interpreter C:\Python38\python.exe
2024-03-12 17:28:25.472 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.473 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.473 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.478 [debug] CreateEnv Trigger - turned off in settings
2024-03-12 17:28:25.616 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.634 [debug] Extension ms-python.debugpy accessed getActiveEnvironmentPath with args: undefined
2024-03-12 17:28:25.639 [debug] Extension ms-python.debugpy accessed resolveEnvironment with args: {"id":"C:\\PYTHON38\\PYTHON.EXE","path":"C:\\Python38\\python.exe"}
2024-03-12 17:28:25.647 [debug] Found cached env for C:\Python38\python.exe
2024-03-12 17:28:25.668 [debug] Extension ms-python.debugpy accessed resolveEnvironment with args: "C:\\Python38\\python.exe"
2024-03-12 17:29:10.882 [debug] Clearing context for python dependencies not installed: ms-python.python.Python
2024-03-12 17:29:10.883 [debug] Found cached env for C:\Python38\python.exe

Output for Python Debugger

``` 2024-03-12 17:26:32.337 [info] Name: Python Debugger 2024-03-12 17:26:32.337 [info] Module: debugpy 2024-03-12 17:27:29.664 [info] DAP Server launched with command: C:\Python38\python.exe c:\Users\z003emnm\.vscode\extensions\ms-python.debugpy-2024.2.0-win32-x64\bundled\libs\debugpy\adapter 2024-03-12 17:28:25.647 [info] DAP Server launched with command: C:\Python38\python.exe c:\Users\z003emnm\.vscode\extensions\ms-python.debugpy-2024.2.0-win32-x64\bundled\libs\debugpy\adapter ```

User Settings

languageServer: "Pylance"

testing
• unittestArgs: ["-v", "-s", ".", "-p", "test_*.py"]
• unittestEnabled: true

experiments
• enabled: false

Extension version: 2024.2.0
VS Code version: Code 1.87.0 (019f4d1419fbc8219a181fab7892ebccf7ee29a2, 2024-02-27T23:41:44.469Z)
OS version: Windows_NT x64 10.0.19045
Modes:

System Info

Item	Value
CPUs	11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz (16 x 2496)
GPU Status	2d_canvas: enabled canvas_oop_rasterization: enabled_on direct_rendering_display_compositor: disabled_off_ok gpu_compositing: enabled multiple_raster_threads: enabled_on opengl: enabled_on rasterization: enabled raw_draw: disabled_off_ok skia_graphite: disabled_off video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.67GB (19.24GB free)
Process Argv	. --crash-reporter-id ad5562b9-4802-4e9d-83ef-990f176f3ed1
Screen Reader	no
VM	0%

A/B Experiments

vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vscoreces:30445986
vscod805cf:30301675
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:30899288
c4g48928:30535728
azure-dev_surveyone:30548225
vscrp:30673768
962ge761:30959799
pythongtdpath:30769146
welcomedialog:30910333
pythonidxpt:30866567
pythonnoceb:30805159
asynctok:30898717
pythontestfixt:30902429
pythonregdiag2:30936856
pyreplss1:30897532
pythonmypyd1:30879173
pythoncet0:30885854
pythontbext0:30879054
accentitlementsc:30887149
dsvsc016:30899300
dsvsc017:30899301
dsvsc018:30899302
pydisww1:30981707
cppperfcontrol:30979541
8082a590:30971561
fegfb526:30981948
bg6jg535:30979843
dsvsc020:30976470

[DudeNr33]

I know there also exists microsoft/vscode-python#10722, but as the debugger is now a separate extension I was not sure if this should now be handled in this repo?

[DudeNr33]

I tried to reproduce this issue on a second Windows machine (Windows 11), but there it worked fine.
The problem occurs on my work laptop with Windows 10.

What I also tried so far:

1. Cleaned all contents from user settings.json: no success
2. Disabled all extensions, only enabled Python and Python Debugger extension: no success

There is no .env file in the workspace:

C:.
│   test_something.py
│
├───.vscode
│       settings.json
│
└───__pycache__
        test_something.cpython-38.pyc

For reference, here is my full user settings.json:

User settings.json

{
    "workbench.startupEditor": "none",
    "workbench.editorAssociations": {
      "*.ipynb": "jupyter-notebook"
    },
    "notebook.cellToolbarLocation": {
      "default": "right",
      "jupyter-notebook": "left"
    },
    "terminal.integrated.defaultProfile.windows": "Command Prompt",
    "cmake.configureOnOpen": false,
    "csharp.suppressDotnetInstallWarning": true,
    "python.formatting.provider": "black",
    "[python]": {
      "editor.defaultFormatter": "ms-python.black-formatter",
      "editor.formatOnType": true
    },
    "files.exclude": {
      "**/__pycache__": true,
      "**/*.pyc": true
    },
    "testOnSave.testCommand": "",
    "python.defaultInterpreterPath": "C:\\Python38\\Scripts\\python.exe",
    "explorer.confirmDragAndDrop": false,
    "editor.formatOnSave": true,
    "workbench.iconTheme": "vscode-icons",
    "plantuml.server": "...",
    "plantuml.render": "PlantUMLServer",
    "remote.SSH.remotePlatform": {
      "dev-ec2": "linux",
      "ssm-dev-ec2": "linux"
    },
    "redhat.telemetry.enabled": false,
    "vsicons.dontShowNewVersionMessage": true,
    "java.configuration.runtimes": [
      {
        "name": "...",
        "path": "..."
      }
    ],
    "maven.settingsFile": "C:\\ProgramData\\chocolatey\\lib\\maven\\apache-maven-3.8.6\\conf\\settings.xml",
    "java.configuration.maven.userSettings": "C:\\ProgramData\\chocolatey\\lib\\maven\\apache-maven-3.8.7\\conf\\settings.xml",
    "testOnSave.languageId": "",
    "editor.stickyScroll.enabled": true,
    "git.autofetch": true,
    "markdown.validate.enabled": true,
    "git.confirmSync": false,
    "eslint.workingDirectories": ["frontend"],
    "workbench.colorTheme": "Default Dark+",
    "prettier.printWidth": 160,
    "[html]": {
      "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "sonarlint.rules": {
      "python:S107": {
        "level": "off"
      }
    },
    "java.configuration.maven.globalSettings": "C:\\ProgramData\\chocolatey\\lib\\maven\\apache-maven-3.8.7\\conf\\settings.xml",
    "java.configuration.updateBuildConfiguration": "automatic",
    "boot-java.rewrite.reconcile": true,
    "java.format.settings.url": "...",
    "[json]": {
      "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "maven.terminal.useJavaHome": true,
    "explorer.confirmDelete": false,
    "[typescript]": {
      "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "prettier.singleQuote": true,
    "pylint.importStrategy": "fromEnvironment",
    "editor.renderWhitespace": "trailing",
    "robot.variables": {},
    "editor.guides.bracketPairs": "active",
    "editor.detectIndentation": false,
    "window.zoomLevel": -1,
    "[markdown]": {
      "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "jupyter.askForKernelRestart": false,
    "[jsonc]": {
      "editor.defaultFormatter": "esbenp.prettier-vscode"
    },
    "robot.completions.keywords.prefixImportName": true,
    "continue.telemetryEnabled": false,
    "continue.enableTabAutocomplete": false,
    "mypy-type-checker.importStrategy": "fromEnvironment",
    "mypy-type-checker.args": ["--ignore-missing-imports", "--implicit-optional"],
    "accessibility.signals.terminalQuickFix": {
      "sound": "on"
    },
    "markdownlint.config": {
      "MD024": {
        "siblings_only": true
      }
    },
    "python.experiments.enabled": false
  }

In addition, the config setting for Python: Env File is set to: ${workspaceFolder}/.env (both in User and in Workspace settings).

If there is any additional information that I can provide to help find the root cause, please let me know.

[DudeNr33]

With the following launch.json debugging works:

{
  // 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 Debugger: Debug Test",
      "purpose": ["debug-test"],
      "type": "debugpy",
      "request": "launch",
      "program": "${file}",
      "console": "integratedTerminal"
    }
  ]
}

Changing console to internalConsole makes the issue reappear.
Shouldn't this have been fixed via microsoft/vscode-python#21033?

[eleanorjboyd]

Hello! Sorry for the delay but are you still experiencing this issue?

[DudeNr33]

Hi! Yes, the issue still exists. The workaround with the modified launch.json and the use of "console": "integratedTerminal" is still required.

I am using the current version 1.93.1:

Version: 1.93.1 (system setup)
Commit: 38c31bc77e0dd6ae88a4e9cc93428cc27a56ba40
Date: 2024-09-11T17:20:05.685Z
Electron: 30.4.0
ElectronBuildId: 10073054
Chromium: 124.0.6367.243
Node.js: 20.15.1
V8: 12.4.254.20-electron.0
OS: Windows_NT x64 10.0.19045

[rwijtvliet]

Just to add a datapoint: I have the same issue. I'm also on Win10, but I get the error regardless of launch.json having "console": "integratedTerminal" or "console": "internalConsole".

[rwijtvliet]

I found what caused the issue for me. There was an incorrect entry in the Path environment variable in windows. There was a folderpath which contained a /, which is forbidden under windows. (Going from the name, it was caused by GlazeWM, but I'm not pointing fingers.)

After removing the entry, I could debug tests again.

Hope that is helpful for some of you; maybe the error message could be improved to reflect this possible error source.