plan.py

>>> customer = stripe.Customer.create(
...     card="tok_1SxLsd4YtToozX")
>>> plan = stripe.Plan.create(
...     amount=2000,
...     interval='month',
...     name='Amazing Gold Plan',
...     currency='usd',
...     id='gold')
>>> customer.update_subscription(
...     plan="gold")

test.py

>>> import stripe
>>> stripe.api_key = "sample_test_api_key"
>>> stripe.api_base = "https://api.webpay.jp"
>>> stripe.Charge.create(
...     amount=400,
...     currency="jpy",
...     card={
...         "number": '4242424242424242',
...         "exp_month": '12',
...         "exp_year": '2014',
...         "cvc": '123'
...     }
... )
>>> customer = stripe.Customer.create(
...     card="tok_1SxLsd4YtToozX")
>>> plan = stripe.Plan.create(
...     amount=2000,
...     interval='month',
...     name='Amazing Gold Plan',
...     currency='jpy',
...     id='gold')
>>> customer.update_subscription(
...     plan="gold")