import requests
import json
import sys

dataJson = '{"id":"file","value":"File","popup":{"menuitem":[{"value":"New","onclick":"CreateNewDoc()"},{"value":"Open","onclick":"OpenDoc()"},{"value":"Close","onclick":"CloseDoc()"}]}}'

data = json.loads(dataJson)

for item in data["popup"]["menuitem"]:
   print(item.get('onclick'))


#json compacter : https://jsonformatter.org/e8391c
#pretty print json : print(json.dumps(data, indent=4, sort_keys=True))