Heroku: ModuleNotFoundError :No module named 'requests'

Question

I am trying to deploy a Django program to Heroku. The application runs successfully on my local machine, which uses Anaconda and Python 3.5. I cannot get it to push to Heroku. Upon the command

>git push heroku master

remote: Compressing source files... done.
remote: Building source:
remote: 
remote: -----> Python app detected
remote:  !     Python has released a security update! Please consider upgrading to python-3.6.8
remote:        Learn More: https://devcenter.heroku.com/articles/python-runtimes
remote: -----> Installing python-3.6.2
remote: -----> Installing pip
remote: -----> Installing dependencies with Pipenv 2018.5.18…
remote:        Installing dependencies from Pipfile.lock (958efe)…
remote: -----> Installing SQLite3
remote: -----> $ python manage.py collectstatic --noinput
remote:        Traceback (most recent call last):
remote:          File "manage.py", line 15, in <module>
remote:            execute_from_command_line(sys.argv)
remote:          File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
remote:            utility.execute()
remote:          File "/app/.heroku/python/lib/python3.6/site-packages/django/core/management/__init__.py", line 357, in execute
remote:            django.setup()
remote:          File "/app/.heroku/python/lib/python3.6/site-packages/django/__init__.py", line 24, in setup
remote:            apps.populate(settings.INSTALLED_APPS)
remote:          File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/registry.py", line 89, in populate
remote:            app_config = AppConfig.create(entry)
remote:          File "/app/.heroku/python/lib/python3.6/site-packages/django/apps/config.py", line 90, in create
remote:            module = import_module(entry)
remote:          File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
remote:            return _bootstrap._gcd_import(name[level:], package, level)
remote:          File "<frozen importlib._bootstrap>", line 978, in _gcd_import
remote:          File "<frozen importlib._bootstrap>", line 961, in _find_and_load
remote:          File "<frozen importlib._bootstrap>", line 948, in _find_and_load_unlocked
remote:        ModuleNotFoundError: No module named 'requests'
remote: 
remote:  !     Error while running '$ python manage.py collectstatic --noinput'.
remote:        See traceback above for details.
remote: 
remote:        You may need to update application code to resolve this error.
remote:        Or, you can disable collectstatic for this application:
remote: 
remote:           $ heroku config:set DISABLE_COLLECTSTATIC=1
remote: 
remote:        https://devcenter.heroku.com/articles/django-assets
remote:  !     Push rejected, failed to compile Python app.
remote: 
remote:  !     Push failed
remote: Verifying deploy...
remote: 
remote: !   Push rejected to [redacted].

I'm not sure why I can't get the requests module to be pip installed in Heroku. It is in my requirements.txt file:

Django==2.1.7
dj-database-url==0.5.0
dj-static==0.0.6
gunicorn==19.9.0
Unipath==1.1
python-decouple==3.1
Pillow==3.3.0
Markdown==3.0.1
bleach==3.1.0
psycopg2==2.7.7
whitenoise==4.1.2
requests==2.21.0
requests-oauthlib==1.0.0

Answer 1

The output from your Heroku build shows that you have a Pipfile and Pipfile.lock in addition to your requirements.txt .

You need to choose between using pip (using requirements.txt ) or Pipenv (using Pipfile and Pipfile.lock ). If all three files are present, Heroku will install with Pipenv, ignoring your requirements.txt file.

Either

• move your requirements to your Pipfile and run Pipenv locally to install them and update your Pipfile.lock , delete your requirements.txt , commit, and push (to use Pipenv), or
• delete the Pipfile and Pipfile.lock , use pip (or pip-tools or similar) locally, commit, and push (to use pip ).