Python nested cycle

gistfile1.txt

import json
from pprint import pprint
from inspect import getmembers

with open('items.json') as data_file:
    links = json.load(data_file)
separate_links = []
for link in links:
    separate_links.append(link)

result = [str("http://www.investopedia.com" + url) for urls in separate_links for url in urls['link']]
pprint(result)

nested cycle for parsing json file with multidimensional array