This file describes how you can create and deploy a flask application

Project setup

Initialise your git repo in the working directory with

$ git init

Initialise your pipenv environment by running

$ pipenv shell

Install the required packages for creation of the app and the deployment using Heroku

$ pipenv install flask, autoenv, gunicorn

Create a file called Procfile and add the following line

web: gunicorn app:app

Create a Heroku app using the Heroku CLI

$ heroku login
$ heroku create karomoweb-stage

Add the heroku remote to your git

$ git remote add stage [email protected]:karomoweb-stage.git

You can either connect Github to your Heroku app or using Heroku's remote to update your app

Create a config.py file and add the following code

import os
basedir = os.path.abspath(os.path.dirname(__file__))


class Config(object):
    DEBUG = False
    TESTING = False
    CSRF_ENABLED = True
    SECRET_KEY = 'this-really-needs-to-be-changed'


class ProductionConfig(Config):
    DEBUG = False


class StagingConfig(Config):
    DEVELOPMENT = True
    DEBUG = True


class DevelopmentConfig(Config):
    DEVELOPMENT = True
    DEBUG = True


class TestingConfig(Config):
    TESTING = True

Create an env file using

$ touch .env

Then add the following lines

pipenv shell

export APP_SETTINGS="config.DevelopmentConfig"

We set the Heroku environment variable by running

$ heroku config:set APP_SETTINGS=config.StagingConfig --remote stage

You can also go to Heroku deploy settings and set Autodeploy everytime the master branch or the github branch is updated

K-Jay9/flask_heroku.md

Project setup