expand request data

[lbgws2]

Hello everyone, I am a newcomer who has just started working with ultisnips. I would like to use ultisnipps to complete the following functions

This is an open request address, request_test

I want to request data through Python code or curl to generate a list of titles. After return, I can select a title to complete it through nvim-cmp. I have reviewed the documentation and referenced other people's code, but I still don't know how to implement it

If possible, could you provide an example to help me understand how it was implemented