Another example Flask application to demonstrate authenticating with the Campaign Monitor API using OAuth. This example only uses the createsend and Flask packages.

app.py

# 1. Set CREATESEND_CLIENT_ID, CREATESEND_CLIENT_SECRET, and CREATESEND_REDIRECT_URI
#    environment variables for your registered OAuth application. Also set SESSION_SECRET
#    environment variable for Flask.
# 2. `pip install -r requirements.txt`
# 3. `python app.py`

import os
from flask import Flask, render_template, request, redirect, url_for
from createsend import *

app = Flask(__name__)
app.config['SECRET_KEY'] = os.environ['SESSION_SECRET']

@app.route('/')
def login():
  cs = CreateSend()
  return redirect(cs.authorize_url(
    os.environ['CREATESEND_CLIENT_ID'],
    os.environ['CREATESEND_REDIRECT_URI'],
    'ViewReports,CreateCampaigns,SendCampaigns'
  ))

@app.route('/exchange_token')
def exchange_token():
  code = request.args.get('code', '')
  cs = CreateSend()
  access_token, expires_in, refresh_token = cs.exchange_token(
    os.environ['CREATESEND_CLIENT_ID'],
    os.environ['CREATESEND_CLIENT_SECRET'],
    os.environ['CREATESEND_REDIRECT_URI'],
    code
  )

  response = "<pre>"
  response += "Your user is successfully authenticated. Here are you details you need:<br/><br/>"
  response += "access token: %s<br/>" % access_token
  response += "refresh token: %s<br/>" % refresh_token
  response += "expires in: %s<br/>" % expires_in
  response += "<br/><br/>"

  cs.auth({
    'access_token': access_token,
    'refresh_token': refresh_token })
  clients = cs.clients()

  response += "We've made an API call too. Here are your clients:<br/><br/>"
  for c in clients:
    response += "%s (%s)<br/>" % (c.Name, c.ClientID)
  response += "</pre>"
  return response

if __name__ == '__main__':
  port = int(os.environ.get('PORT', 5000))
  app.run(host='0.0.0.0', port=port, debug=True)

Procfile

web: python app.py

requirements.txt

Flask==0.9
Jinja2==2.6
Werkzeug==0.8.3
createsend
wsgiref==0.1.2