Python debugger changes file

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#1,499 opened on Jan 25, 2024 5 comments 0 reactions 0 assignees View on GitHub

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Assessment

Difficulty: 3/5
Estimated time: 1-2 days
Newbie friendliness: 35/100

Issue type: Bug
Clarity: Mostly clear
Activity status: Stale
Tech stack: python, vscode
Domain: devtools

Research direction

Reproduce the behavior using the launch.json configuration with script.py and script2.py, comparing F5 with Ctrl-F5 and the relative versus absolute program paths. Trace how the debugger starts the target and subprocess, then verify that file matches the expected absolute-path behavior in both cases.

Written by the indexing model from the issue text.

Description

bug

Type: Bug

Behaviour

Steps to reproduce:

Make launch.json be like

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "Python: Current File",
            "type": "python",
            "request": "launch",
            "program": "script.py",
            "cwd": "<the parent directory of srcipt.py>"
            "console": "integratedTerminal",
            "justMyCode": true,
        }
    ]
}

and script.py be

print(__file__)

When I run the script.py with debugger (by F5) the __file__ is "script.py".
When I run the script.py without debugger (by ctrl-F5) the __file__ is the absolute path of script.py.

According to https://stackoverflow.com/questions/7116889/is-module-file-attribute-absolute-or-relative, __file__ should be absolute path, because my python version is 3.10.

This happens when "program" of launch.json is relative path.
When "program" is absolute path, the launched script.py's __file__ is absolute path, but if I call subprocess.run(["python", "script2.py"]) in script.py, called script2.py's __file__ becomes "script2.py"

Diagnostic data

Python version (& distribution if applicable, e.g. Anaconda): 3.10.12
Type of virtual environment used (e.g. conda, venv, virtualenv, etc.): Global
Value of the python.languageServer setting: Pylance

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

XXX

User Settings


languageServer: "Pylance"

Extension version: 2023.22.1
VS Code version: Code 1.85.2 (8b3775030ed1a69b13e4f4c628c612102e30a681, 2024-01-18T06:40:10.514Z)
OS version: Windows_NT x64 10.0.19045
Modes:
Remote OS version: Linux x64 5.15.133.1-microsoft-standard-WSL2
Remote OS version: Linux x64 5.15.133.1-microsoft-standard-WSL2

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 x 3600)
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 video_decode: enabled video_encode: enabled vulkan: disabled_off webgl: enabled webgl2: enabled webgpu: enabled
Load (avg)	undefined
Memory (System)	31.92GB (21.33GB free)
Process Argv	--crash-reporter-id d0837e9f-f8e1-46b8-b5ab-112cca56ee24
Screen Reader	no
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.15.133.1-microsoft-standard-WSL2
CPUs	Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 x 3600)
Memory (System)	19.54GB (17.84GB free)
VM	0%

Item	Value
Remote	WSL: Ubuntu
OS	Linux x64 5.15.133.1-microsoft-standard-WSL2
CPUs	Intel(R) Core(TM) i7-9700K CPU @ 3.60GHz (8 x 3600)
Memory (System)	19.54GB (17.84GB free)
VM	0%

A/B Experiments

vsliv368cf:30146710
vspor879:30202332
vspor708:30202333
vspor363:30204092
vstes516:30244333
vscorecescf:30445987
vscod805:30301674
binariesv615:30325510
vsaa593cf:30376535
py29gd2263:30899288
c4g48928:30535728
azure-dev_surveyone:30548225
2i9eh265:30646982
962ge761:30933248
pythongtdpath:30769146
welcomedialogc:30910334
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
dsvsc019acf:30933242

Dominant language: Python
Stars: 2.5k
Forks: 202
Avg merge: 5d 1h
Merged PRs (30d): 1

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