Can't debug Django applications any longer

[asandeep]

Issue Type: Bug

Hi Team,
I am no longer able to debug my Django applications in VSCode. I tried both existing configuration and new experimental configurations and none of them really work.
When I use normal config (given below), django server starts but all breakpoints converts to: 'Unverified breakpoint' and code never stops on the set breakpoints.

{
            "name": "Django",
            "type": "python",
            "request": "launch",
            "program": "${workspaceFolder}/manage.py",
            "args": [
                "runserver",
                "--noreload",
                "--nothreading"
            ],
            "debugOptions": [
                "RedirectOutput",
                "Django"
            ]
        }

With experimental config, django server never starts and all i get in console is this message:

pydev debugger: starting
pydev debugger: New process is launching (breakpoints won't work in the new process).
pydev debugger: To debug that process please enable 'Attach to subprocess automatically while debugging?' option in the debugger settings.

Experimental config:

{
            "name": "Django Experimental",
            "type": "pythonExperimental",
            "request": "launch",
            "program": "${workspaceFolder}/manage.py",
            "args": [
                "runserver",
                "--noreload",
                "--nothreading",
            ],
            "django": true,
        }

Extension version: 2018.5.0
VS Code version: Code 1.23.1 (d0182c3417d225529c6d5ad24b7572815d0de9ac, 2018-05-10T16:04:33.747Z)
OS version: Linux x64 4.4.0-128-generic

System Info

Item	Value
CPUs	Intel(R) Core(TM) i7-8650U CPU @ 1.90GHz (8 x 2197)
GPU Status	2d_canvas: enabled flash_3d: enabled flash_stage3d: enabled flash_stage3d_baseline: enabled gpu_compositing: enabled multiple_raster_threads: enabled_on native_gpu_memory_buffers: disabled_software rasterization: disabled_software video_decode: unavailable_software video_encode: enabled vpx_decode: unavailable_software webgl: enabled webgl2: enabled
Load (avg)	2, 1, 1
Memory (System)	7.66GB (0.72GB free)
Process Argv	/snap/vscode/37/usr/share/code/code
Screen Reader	no
VM	0%

[DonJayamanne]

Please could you try this in the latest version of VS Code.

[asandeep]

Thanks @DonJayamanne for responding.
I tried in latest version and this still doesn't work.
Here's the Visual Studio Code about info:

Version: 1.25.1
Commit: 1dfc5e557209371715f655691b1235b6b26a06be
Date: 2018-07-11T15:40:20.190Z
Electron: 1.7.12
Chrome: 58.0.3029.110
Node.js: 7.9.0
V8: 5.8.283.38
Architecture: x64

Tried with both "Django" and "Django Experimental" settings.
This is what I get when using experimental settings:

pydev debugger: New process is launching (breakpoints won't work in the new process).
pydev debugger: To debug that process please enable 'Attach to subprocess automatically while debugging?' option inthe debugger settings.

Let me know if you need more info.

[DonJayamanne]

This is what I get when using experimental settings:

The message you have provided is not an error. just a warning that can be ignored.

'Unverified breakpoint' and code never stops on the set breakpoints.

This should work in the new experimental debugger.

• Please could you upload your repo so we could reproduce this at our end.
• Please try debugging the following django sample using the experimental debugger, let me know how that goes. https://github.com/DonJayamanne/vscode-python-samples/tree/master/sample-django

[asandeep]

Hey Don,

Unfortunately that is a private repo that I won't be able to upload.

However, I tried debugging the sample application that you shared and debugger worked seemlessly. I also tried swithcing the application to Django 1.11.10 and Python 2.7 (That we are using in our project) and there also debugger worked without any issues.

Perhaps there is some issue in the project setup that I am currently not able to figure out.

You many please close this ticket. Thanks anyways for looking into it.

[DonJayamanne]

I would like to help you. Please let me know errors does you are getting?
Also how do you run the Django project manually from the terminal. If you can run it from the terminal you can do the same from vscode and also debug it.

[asandeep]

Hey Don,

Really appreciate your help.

This is what I get when I execute python manage.py runserver on terminal:

ERROR: secret.py not found, falling back to secret key generated by DJANGO
ERROR: secret.py not found, falling back to secret key generated by DJANGO
Performing system checks...

System check identified no issues (0 silenced).
August 06, 2018 - 15:01:45
Django version 1.11.10, using settings 'searchstax.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.

Output is similar when I use normal Python: Django debug configuration:

cd /home/sandeep/workspace/git/measuredsearch/searchstax ; env "PYTHONIOENCODING=UTF-8" "PYTHONUNBUFFERED=1" /home/sandeep/workspace/virtualenvs/ms_prod_u16/bin/python /home/sandeep/.vscode/extensions/ms-python.python-2018.7.1/pythonFiles/PythonTools/visualstudio_py_launcher.py /home/sandeep/workspace/git/measuredsearch/searchstax 41830 34806ad9-833a-4524-8cd6-18ca4aa74f14 RedirectOutput,RedirectOutput,DjangoDebugging /home/sandeep/workspace/git/measuredsearch/searchstax/manage.py runserver --noreload --nothreading
ERROR: secret.py not found, falling back to secret key generated by DJANGO
Performing system checks...

System check identified no issues (0 silenced).
August 06, 2018 - 15:14:42
Django version 1.11.10, using settings 'searchstax.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.

And below is the output with experimental configuration:

cd /home/sandeep/workspace/git/measuredsearch/searchstax ; env "PYTHONIOENCODING=UTF-8" "PYTHONUNBUFFERED=1" "PYTHONPATH=/home/sandeep/.vscode/extensions/ms-python.python-2018.7.1/pythonFiles/experimental/ptvsd" /home/sandeep/workspace/virtualenvs/ms_prod_u16/bin/python -m ptvsd --host localhost --port 45665 /home/sandeep/workspace/git/measuredsearch/searchstax/manage.py runserver --noreload --nothreading
pydev debugger: New process is launching (breakpoints won't work in the new process).
pydev debugger: To debug that process please enable 'Attach to subprocess automatically while debugging?' option in the debugger settings.

ERROR: secret.py not found, falling back to secret key generated by DJANGO
Performing system checks...

System check identified no issues (0 silenced).
August 06, 2018 - 15:10:13
Django version 1.11.10, using settings 'searchstax.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.

[asandeep]

Hey Don,

A small update, I just tried debugging same repository with Pycharm CE and it worked seemlessly.

[DonJayamanne]

Based on the info provided it works with the experimental debugger.
Please ignore the warning message you get at the start.
It should work.