PayMill Django Form

paymill_form.py

from decimal import Decimal
import pymill

p = pymill.Pymill(PRIVATE_KEY)
token = self.cleaned_data.get('token')
plan = {'initial_price': Decimal(0), 'external_id': 'ext_plan_id'}
price = int(plan.initial_price * Decimal(100))
email = 'subscriber@mail.com'

try:
    client = p.new_client(email=email)
    payment = p.new_card(token, client=client)
    subscription = p.new_subscription(client=client, offer=plan.external_id, payment=payment)
    transaction = p.transact(price, payment=payment)
except:
    return False