Django Web App running on local Debian 10 but failing on Azure

Question

I can run my web app on my local machine - no errors. But when porting the directory strcture to Azure, I get the ModuleNotFoundError: No module named 'django'.

Here is what I did:

My app is publicly available on GitHub. The app runs in a virtual environment (called deploydjango). That is reflected in the tree structure of the repo.
I ensured that Python version was correct (3.8 as on my local machine).
I posted the code to Azure (using the Azure extension of Visual Studio Code).
When browsing to the web app URL, I get the error message:

:( Application Error
If you are the application administrator, you can access the diagnostic resources.

That takes me to Diagnose and solve problems on Azure page for the Web App Service. Here I find Availability and Performance.
- Herein the tab "Web App Dow" is found.
  - Under Application Logs I am advised, that: Application logs from instance: lw0sdlwk00016P contain an error or a warning
  - Clicking More info, I get a log telling me:

2021-02-18T12:02:07.203140817Z [2021-02-18 12:02:07 +0000] [37] [ERROR] Exception in worker process
2021-02-18T12:02:07.203175518Z Traceback (most recent call last):
2021-02-18T12:02:07.203181819Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2021-02-18T12:02:07.203186419Z     worker.init_process()
2021-02-18T12:02:07.203190419Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/workers/base.py", line 119, in init_process
2021-02-18T12:02:07.203285623Z     self.load_wsgi()
2021-02-18T12:02:07.203293724Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2021-02-18T12:02:07.203297724Z     self.wsgi = self.app.wsgi()
2021-02-18T12:02:07.203301124Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/app/base.py", line 67, in wsgi
2021-02-18T12:02:07.203304824Z     self.callable = self.load()
2021-02-18T12:02:07.203308324Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2021-02-18T12:02:07.203312024Z     return self.load_wsgiapp()
2021-02-18T12:02:07.203315425Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2021-02-18T12:02:07.203321625Z     return util.import_app(self.app_uri)
2021-02-18T12:02:07.203325225Z   File "/opt/python/3.8.6/lib/python3.8/site-packages/gunicorn/util.py", line 358, in import_app
2021-02-18T12:02:07.203328925Z     mod = importlib.import_module(module)
2021-02-18T12:02:07.203332425Z   File "/opt/python/3.8.6/lib/python3.8/importlib/__init__.py", line 127, in import_module
2021-02-18T12:02:07.203336226Z     return _bootstrap._gcd_import(name[level:], package, level)
2021-02-18T12:02:07.203349826Z   File "", line 1014, in _gcd_import
2021-02-18T12:02:07.203355026Z   File "", line 991, in _find_and_load
2021-02-18T12:02:07.203358827Z   File "", line 975, in _find_and_load_unlocked
2021-02-18T12:02:07.203362427Z   File "", line 671, in _load_unlocked
2021-02-18T12:02:07.203366027Z   File "", line 783, in exec_module
2021-02-18T12:02:07.203369727Z   File "", line 219, in _call_with_frames_removed
2021-02-18T12:02:07.203373527Z   File "/home/site/wwwroot/box_whiskers_demo/wsgi.py", line 12, in 
2021-02-18T12:02:07.203377427Z     from django.core.wsgi import get_wsgi_application
2021-02-18T12:02:07.203381027Z ModuleNotFoundError: No module named 'django'
2021-02-18T12:02:07.204377772Z [2021-02-18 12:02:07 +0000] [37] [INFO] Worker exiting (pid: 37)
2021-02-18T12:02:07.305791277Z [2021-02-18 12:02:07 +0000] [35] [INFO] Shutting down: Master
2021-02-18T12:02:07.312126259Z [2021-02-18 12:02:07 +0000] [35] [INFO] Reason: Worker failed to boot.

You need to install Django. I see that its in your requirements.txt, did you forget to install those on Azure? — Josh C
– Josh C, Commented Feb 18, 2021 at 18:34

Karpi · Accepted Answer · 2021-02-19 09:42:39Z

1

2021-02-18T12:02:07.203377427Z from django.core.wsgi import get_wsgi_application 2021-02-18T12:02:07.203381027Z ModuleNotFoundError: No module named 'django'

above two lines says Django is not installed

If it is installed then check the below documentation:

https://learn.microsoft.com/en-us/azure/app-service/configure-language-python#customize-startup-command

edited Feb 19, 2021 at 9:42

answered Feb 18, 2021 at 18:43

Karpi

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6 Comments

Morten Engelsmann Over a year ago

Agree. But (as mentioned in the comment to Josh above), Django files are present, but Azure is not aware of that.

Karpi Over a year ago

learn.microsoft.com/en-us/azure/app-service/…

Morten Engelsmann Over a year ago

According to Azure doc, Azure runs pip install -r requirements.txt upon upload of files. My requirements.txt contains the module that Azure does not find.

Morten Engelsmann Over a year ago

The referenced documentation helped. Issuing the command

az webapp config set --resource-group mortens_first_rg --name box-whiskers-demo --startup-file "pip install -r requirements.txt"

in local CLI brought me over this bug.

Morten Engelsmann Over a year ago

could you please reformulate your comment an an answer in order for me to accept?

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