Create and deploy a Python/Flask "hello world" app on Heroku.

setup.sh

#!/bin/bash

# Create and deploy a Python/Flask "hello world" app on Heroku. 
# by James Thornton, http://jamesthornton.com

# To run it, do:

# $ heroku login
# $ bash setup.sh helloworld
# $ cd helloworld
# $ git push heroku master

read -d '' APP <<"EOF"
import os

from flask import Flask
app = Flask(__name__)

@app.route('/')
def hello():
    return 'Hello World!'

if __name__ == '__main__':
    # Bind to PORT if defined, otherwise default to 5000.
    port = int(os.environ.get('PORT', 5000))
    app.run(host='0.0.0.0', port=port)
EOF

mkdir $1 && cd $1
heroku create --stack cedar
virtualenv env --distribute
source env/bin/activate
pip install flask
pip install gunicorn
pip freeze >requirements.txt
echo "${APP}" >app.py
echo "web: gunicorn app:app -b \"0.0.0.0:\$PORT\" -w 3" >Procfile
echo "env" >>.gitignore
echo "*.pyc" >>.gitignore
git init
git add .
git commit -m "initial push"