July 2019
Beginner to intermediate
302 pages
9h 38m
English
Content preview from Flask Framework Cookbook - Second Edition
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How to do it...
Now that we have an application that needs to be deployed to Heroku, let's get started:
- First, Heroku needs to know the command that it needs to run while deploying the application. This is done in a file named Procfile:
web: gunicorn -w 4 my_app:app
Here, we will tell Heroku to run this command in order to run our web application.
There are a lot of different configurations and commands that can go into Procfile. For more details, read the Heroku documentation at https://devcenter.heroku.com/articles/procfile.
- Heroku needs to know the dependencies that it needs to install in order to successfully install and run our application. This is done via the requirements.txt file:
Babel==2.6.0blinker==1.4boto3==1.9.145botocore==1.12.145 ...
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