Subprocess with visual studio debugger attached to process causes a problem in python project

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

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I'm facing a very annoying issue with Visual Studio 2022. Here's how to replicate it.

Folder contents:

test-debugpy-issue
|   test-debugpy-issue.sln
|   
\---test-debugpy-issue
        cli.py
        environment.json
        test-debugpy-issue.pyproj
        test_debugpy_issue.py
        test_debugpy_issue_simplified.py

Contents of cli.py:

print("hello world")

Contents of test_debugpy_issue_simplified:

import subprocess
import os
import json

print(os.getpid())
input()

configArgs = ["python", "cli.py"]

ret_code=0
while ret_code==0:
    ret_code = subprocess.call(configArgs, shell=False, universal_newlines=True)
    print(ret_code)

In order to replicate the issue, carry out the following steps:

• Open up a Powershell or CMD terminal
• Run python .\test_debugpy_issue.py
• Copy the provided PID
• In Visual Studio 2022 under Debug > Attach to Process, paste the PID, select the process as shown below:

[! [enter image description here] 1] 1

• Click Attach, then wait in the Output window until the process has successfully attached. This apparently requires multiple attempts:

[! [enter image description here] 2] 2

• Go back into your Powershell and CMD terminal and press Enter
• The following error should appear:

0.47s - Error importing debugpy._vendored.force_pydevd (with sys.path entry: 'c:\program > files\microsoft visual studio\2022\professional\common7\ide\extensions\microsoft\python\core')
Traceback (most recent call last):
File "c:\program files\microsoft visual studio\2022\professional\common7\ide\extensions\microsoft\python\core\debugpy_vendored\pyde> vd_pydevd_bundle\pydevd_defaults.py", line 60, in on_pydb_init
import(module_name)
ModuleNotFoundError: No module named 'debugpy'

I've found this issue on Github which describes a similar problem, but it's from the Vs Code repo. I'm not using VS Code.

Why is this happening and how can I fix it ?

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Original Comments

Feedback Bot on 4/7/2023, 01:36 AM:

(private comment, text removed)

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Original Solutions

(no solutions)

[StellaHuang95]

@int19h Could you help taking a look at this one whenever you got a chance? Thanks.😊

[amine-aboufirass]

@StellaHuang95 thanks, I had also logged a similar issue for VS Code so that might be related, since I think both IDE's use debugpy.