Python :: chaining generators for API call -

i hitting api responses consists of many pages, say, 100.

this takes long, trying use generators can yield values each page , process until condition met down pipeline.

import requests import json import itertools 

i defining generator make requests:

def api_query(query):       page=1     while true:          # requests,          result in body:                 title = result["result"]["title"]                        primaryartist_name = result["result"]["primary_artist"]["name"]              yield title, primaryartist_name          page+=1 

then, want filter first page response using other generator:

def api_filter():      api_response = api_query('query')      # 10 first results     page1 = [api_response.next() in range(10)]     # filtering page1 results     yield results 

lastly, test condition , try return desired values:

def api_print():      results = api_filter()      page1 = list(it.islice(results, 5))     # check if page1 results satisfy given condition     if condition:         return page1     # or try next page     else:         page2 = list(it.islice(results.next(), 5))             return page2 

however, @ last bit of code, can print page1; if code moves else,

page2 = list(it.islice(results.next(), 5)) stopiteration

what doing wrong?

ps: sorry if non working example; full code long, using simplified question in order test concept of generators in case...