I am trying to charge an existing Stripe customer with an updated credit card (Stripe token) for a new subscription plan. Most of the examples given are for creating a new customer and charging the customer for a new plan, but I want to charge an existing customer.
new_customer = stripe.Customer.create(
email=request.POST['stripeEmail'],
plan = 'plan_DgV0NXZk7vlMMG',
card=request.POST['stripeToken']
)