Python, Flask, Gunicorn Error: Unrecognized Arguments
Solution 1
I managed to solve my problem, with the suggestion that @euxneks proposed, as well as some messing around with Google OAuth 2.0.
Essentially, the tutorial that I had been using, Python Quickstart for Google Calendar API, was using argparse
to get flags for credentials. However, it was also calling tools.run
, which is deprecated. So instead, I decided to follow a different, more up-to-date tutorial, which walks you through using OAuth 2.0 with a Python Web App.
Solution 2
I was able to solve this problem by replacing args = parser.parse_args() in my app with args, unknown = parser.parse_known_args()
Solution 3
The issue was with having argparse in my script that is being ran by flask/gunicorn. Put these inside a:
if __name__ == "__main__":
import argparse
...
This way if it's ran directly you can still parse the arguments running it standalone.
Solution 4
I was running into the same issue when following the tutorial. I removed the --log-file
flag shown in their example.
In addition, I also modified the string so it references the wsgi.py application under my app directory [/app/wsgi.py] as follows:
web: gunicorn app.wsgi
Hope this helps!
frogbandit
Updated on June 13, 2022Comments
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frogbandit almost 2 years
I am running my app
app.py
using Python and Flask. I'm trying to deploy it to Heroku, and I followed the steps in this tutorial, including making a Procfile and requirements.txt. However, whenever I runheroku local
, I get the following error:web.1 | [2015-09-26 17:36:32 -0400] [19422] [INFO] Starting gunicorn 19.3.0 web.1 | [2015-09-26 17:36:32 -0400] [19422] [INFO] Listening at: http://0.0.0.0:5000 (19422) web.1 | [2015-09-26 17:36:32 -0400] [19422] [INFO] Using worker: sync web.1 | [2015-09-26 17:36:32 -0400] [19425] [INFO] Booting worker with pid: 19425 web.1 | usage: gunicorn [-h] [--auth_host_name AUTH_HOST_NAME] web.1 | gunicorn: error: unrecognized arguments: app:app web.1 | [2015-09-26 17:36:32 -0400] [19425] [INFO] Worker exiting (pid: 19425)
I've deployed apps successfully on Heroku before, but never have gotten this error. My Procfile is simply one line:
web: gunicorn app:app
.Can anybody tell me how to fix this?
UPDATE: Modified some of my code and now when I run
heroku local
, it runs fine:web.1 | [2015-09-28 18:52:13 -0400] [70650] [INFO] Starting gunicorn 19.3.0 web.1 | [2015-09-28 18:52:13 -0400] [70650] [INFO] Listening at: http://0.0.0.0:5000 (70650) web.1 | [2015-09-28 18:52:13 -0400] [70650] [INFO] Using worker: sync web.1 | [2015-09-28 18:52:13 -0400] [70653] [INFO] Booting worker with pid: 70653
However, when I deploy my Heroku app, I get an Application Error, and when I check the logs, I see the same error as before:
2015-09-28T22:50:54.775077+00:00 app[web.1]: 2015-09-28 22:50:54 [3] [INFO] Starting gunicorn 18.0 2015-09-28T22:50:54.776176+00:00 app[web.1]: 2015-09-28 22:50:54 [3] [INFO] Using worker: sync 2015-09-28T22:50:54.776052+00:00 app[web.1]: 2015-09-28 22:50:54 [3] [INFO] Listening at: http://0.0.0.0:24995 (3) 2015-09-28T22:50:54.786067+00:00 app[web.1]: 2015-09-28 22:50:54 [9] [INFO] Booting worker with pid: 9 2015-09-28T22:50:56.004336+00:00 heroku[web.1]: State changed from starting to up 2015-09-28T22:51:42.659042+00:00 heroku[router]: at=error code=H13 desc="Connection closed without response" method=GET path="/" host=bobawithjames.herokuapp.com request_id=1afab4c0-484e-456b-be05-3086ee0711cd fwd="160.39.250.29" dyno=web.1 connect=1ms service=39ms status=503 bytes=0 2015-09-28T22:51:42.604331+00:00 app[web.1]: [--noauth_local_webserver] 2015-09-28T22:51:42.604323+00:00 app[web.1]: usage: gunicorn [-h] [--auth_host_name AUTH_HOST_NAME] 2015-09-28T22:51:42.604335+00:00 app[web.1]: [--auth_host_port [AUTH_HOST_PORT [AUTH_HOST_PORT ...]]] 2015-09-28T22:51:42.633611+00:00 app[web.1]: gunicorn: error: unrecognized arguments: hello:app
Anyone know what's going on now?
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Hakan over 3 yearsActually this solved my problem with Flask on GAE thanks hero.