itunes-iap
Quick example
from itunesiap import Request
request = Request(raw_data) # base64-encoded data
receipt = request.validate()
print receipt.product_id
Validation policy
from itunsiap import Request, set_validation_mode
set_validation_mode('review') # enable both production and sandbox for appstore review. 'production', 'sandbox' or 'review'
receipt = Request(raw_data).validate()