Deploy Your Python Flask Web To Heroku

flask_to_heroku.py

# Just a record of how to deploy flask to heroku
# original post from https://blog.heron.me/damn-simple-python-web-server-on-heroku-ba67cad2fb18

# 1.Create a new project folder:
$ PROJECT=<WHATEVER YOUR PROJECT NAME>
$ mkdir $PROJECT && cd $PROJECT

# 2.Add requirements.txt inside:
Flask==1.0.3
gunicorn==19.9.0

# 3.Install them:
$ pip install -r requirements.txt

# 4.Write Code ( In the same folder, add main.py:)
from flask import Flask
app = Flask(__name__)
@app.route("/")
def hello():
    return "Hello World!"

# 5.add Procfile (this is used by Heroku to know how to run your code):
web: gunicorn main:app

# 6.Deploy on Heroku
# After installing heroku-cli and login, we initialize our folder as a git repo, create a Heroku app,
# then push our folder to that app via git:
$ git init && git add . && git commit -m "Initialize project"
$ heroku create $PROJECT
$ heroku git:remote -a $PROJECT
$ git push heroku master

# 7.Done! Your hello-world website should be live now at $PROJECT.herokuapp.com