使用Python从Facebook Graph API解析JSON字符串

Question

I'm trying to compile all of my facebook friends user ids, but the output is difficult for me to work with. How can I simplify? It looks like this currently:

{
    u'friends': {
        u'paging': {
            u'next': u'https://graph.facebook.com/556702392/friends?access_token=-MYACCESSTOKEN-&limit=5000&offset=5000&__after_id=100005821213415'
        }, 
        u'data': [
            {u'name': u'Ian Fung', u'id': u'419972'}, 
            {u'name': u'Jason Turer', u'id': u'420694'},
            ...
        ]
   }
   ...
}

This is what I've been able to come up with:

try:
    resp = urllib2.urlopen(url)
    contents = resp.read()
except urllib2.HTTPError, error:
    contents = error.read()

json_encoded = json.loads(contents)
print json_encoded["data"]["id"]

How can I store just the IDs?

Answer 1

It's not entirely clear what data you want, but this list comprehension extracts id from friends data :

>>> json_data = {u'friends': {u'paging': {u'next': u'https://graph.facebook.com/556702392/friends?access_token=-MYACCESSTOKEN-&limit=5000&offset=5000&__after_id=100005821213415'}, u'data': [{u'name': u'Ian Fung', u'id': u'419972'}, {u'name': u'Jason Turer', u'id': u'420694'}]}}
>>> [x['id'] for x in json_data['friends']['data']]
[u'419972', u'420694']

Answer 2

Hope this helps you(and your given data is clumsy and not clear)

import json
from pprint import pprint

json_data=open('json_data')
decoded_data = json.load(json_data)
pprint(decoded_data)
json_data.close()

you can get the json values like this

decoded_data["friends"]["pagind"]["next"]
decoded_data["data"]["name"]
decoded_data["value"]