python - When writing a crawler, there is no csrf token in the source code. How to obtain it?

Question

I am writing a crawler to crawl AliExpress. I see the csrf token in NTEWROK's POST, but how do I get the csrf value when viewing the page source code?
Thanks.

Answer 1

···
https://passport.aliexpress.c...User ID&rnd=random number
···

Answer 2

If it’s not in the source code, it must be in the cookie