[Python] Stripe Subscription: latest_invoice.payment_intent raises AttributeError:...

I'm trying to create a subscription in Stripe using Python and the official library, with the goal of obtaining the client_secret from the initial invoice's PaymentIntent to complete payment on the frontend.

Here is the code I'm using:

import stripe

stripe.api_key = 'sk_test_...'

price_id = 'price_...' # Example
subscription = stripe.Subscription.create(
customer=customer.id,
items=[{'price': price_id}],
payment_behavior='default_incomplete',
expand=['latest_invoice.payment_intent'],
)


I want to access: subscription.latest_invoice.payment_intent.client_secret

But I get the error:

AttributeError: payment_intent
​

What I've checked so far

• The subscription is created successfully.
• The parameter expand=['latest_invoice.payment_intent'] is included to embed the payment_intent object.
• I've verified that the invoice (latest_invoice) exists.
• However, the payment_intent field is missing from the latest_invoice object.

Questions

• Why is payment_intent missing from latest_invoice when creating the subscription with payment_behavior='default_incomplete' and expanding the field?
• How should I obtain the client_secret to confirm payment on the frontend using Stripe.js in these cases?

Continue reading...