This code is a demonstration of creating one time transactions using the Braintree transparent redirect API. We decided to use the web.py framework because its simplicity allows us to clearly demonstrate concepts without added noise. This example was designed to run on Google App Engine. This example is identical to the tr_checkout example except:

• the web.py source is placed at the top level of the example
• the braintree package source is placed at the top level of the example
• the braintree package is configured to use unsafe ssl (no certificate verification) because App Engine does not allow access to M2Crypto
• the web.py app is run using the cgirun() method rather than the run() method
• web.py templates were complied using the following command:
  • python web/template.py --compile templates

To run the exmaple:

• Install the Google App Engine SDK
• Update checkout.py with your merchant_id, public_key and private_key
• point the Google App Engine dev server at this project directory:
  • dev_appserver.py tr_checkout_app_engine
• Visit http://localhost:8080/payments/new