Question

I “finished” a little python project and I want to deploy it on heroku
GitHub page.
I want to execute: python2 main.py -i json-rpc
in order to have the json-rpc server listening for connections
but I get the following error when pushing to heroku:

$ git push heroku master Counting objects: 153, done. Delta
compression using up to 8 threads. Compressing objects: 100% (87/87),
done. Writing objects: 100% (153/153), 43.42 KiB, done. Total 153
(delta 61), reused 153 (delta 61)

—–> Heroku receiving push ! Heroku push rejected, no Cedar-supported app detected

To [e-mail]:panager.git ! [remote rejected] master -> master
(pre-receive hook declined) error: failed to push some refs to
‘[e-mail]:panager.git’

Answer 1

What you might want to try doing is creating a Procfile. The full filename is Procfile, no extension, and it goes in the main directory of your project folder.

The content of that file would be:

web: python main.py -i json-rpc

Give that a shot and see if it works.

Alternatively, you may have forgotten to create a virtualenv for your app.

You should follow the instructions in Heroku’s guide Getting Started with Python on Heroku

Update:

Having finally tested this myself on a fresh Heroku app, what you’re missing is a requirements.txt. Even though you don’t have any dependencies, you still need it. Within your virtualenv in the main project folder, run pip freeze > requirements.txt, and then git add . then git commit -m "added requirements.txt", and then push to Heroku and it should work.