This library provides access to the Paymill API from a Python application.
It depends on Requests, and thereby should also work on Google App Engine.
Example of usage:
import pymill
p = pymill.Pymill("YOUR PRIVATE KEY GOES HERE")
# show IDs for all stored cards
for card in p.get_cards():
print card
# create new card, run transaction on it and refund part of that again
card = p.new_card("token from Paymill bridge goes here")
transaction = p.transact(230, payment=card)
ref = p.refund(transaction, 30)
Find the remaining documentation at http://pymill.readthedocs.org.