No python application found - uWSGI + Flask + nginx

Posted June 14, 2016 60k views
NginxUbuntuPythonPython FrameworksLoggingDeployment

After following this tutorial to set up flask on nginx and uwsgi ( on Ubuntu 14.04, I managed to get the simple app to work, however when I replace my app with it (with the same name), I’m getting an internal server error. At first this was due to the modules, but this persisted after installing all required modules.

Logging uwsgi it says “no python application found, check your startup logs for errors”.

My python file (

app = Flask(__name__, static_folder='static', static_url_path='/static')
app.secret_key = 'askaj3432sd'

if __name__ == "__main__":, host='')


from portal import app

if __name__ == "__main__":

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3 answers

This question was answered by @centolaecebola:

try changing

from portal import app 


from portal import app as application

View the original comment

I too would like to understand how this worked? I had the exact same issue, added the ‘as application’ and didn’t change anything else and it worked. Anyone have an explanation as to why this works?

It’s because uWSGI needs to know the name of the wsgi app instance variable inside

uWSGI looks for an instance named application by default

You can also configure uWSGI to use an instance named app how you had it originally: