CODEWITHSUNDEEP
pythonherokuflaskgunicorn
1UC1F3R616
1UC1F3R616

Reputation: 481

No module named 'flask_cors' when using gunicorn

My application runs normally when running using python run.py but when running using gunicorn gunicorn run:app it gives 'flask_cors' module not found error.

I have created a basic application to make it easier to understand, I have debugged it a lot but didn't work, as it's running fine with python run.py so it should be running when using gunicorn, I think I do not actually understand how gunicorn is actually importing that it's leading to this error.

Working Directory

.
├── flaskblog
│   ├── __init__.py
│   └── routes.py
├── requirements.txt
└── run.py

1 directory, 4 files

__init__.py file

from flask import Flask
from flask_cors import CORS

app = Flask(__name__)
CORS(app, support_credentials=True)

from flaskblog import routes

routes.py file

from flaskblog import app
from flask_cors import cross_origin


@app.route("/")
@cross_origin(supports_credentials=True)
def home():
    return "home"

run.py file

from flaskblog import app

if __name__ == '__main__':
    app.run(debug=True, host='0.0.0.0')

requirements.txt

Flask
gunicorn
flask-cors

edit:

I run the program again to get the error trace, and this time it worked? It started at '127.0.0.1:8000' so I used gunicorn -b 0.0.0.0 run:app

How is it working now?

If you have a better title for the question then please edit it, as now my issue is it's strange behaviour.

Upvotes: 1

Views: 1105

Answers (1)

1UC1F3R616
1UC1F3R616

Reputation: 481

Deleted the pycache and created the environment again, this time it worked as it should be and hosted on heroku successfully. Inside my procfile

web: gunicorn gettingstarted.wsgi
web: gunicorn run:app

Upvotes: 2

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