python - Getting certain information from string -


i'm new python wondering how estimatedwait , routename string.

{   "lastupdated": "07:52",   "filterout": [],   "arrivals": [     {       "routeid": "b16",       "routename": "b16",       "destination": "kidbrooke",       "estimatedwait": "due",       "scheduledtime": "06: 53",       "isrealtime": true,       "iscancelled": false     },     {       "routeid":"b13",       "routename":"b13",       "destination":"new eltham",       "estimatedwait":"29 min",       "scheduledtime":"07:38",       "isrealtime":true,       "iscancelled":false     }   ],   "servicedisruptions":{     "infomessages":[],     "importantmessages":[],     "criticalmessages":[]   } }

and save string displayed on lxterminal of raspberry pi 2. 'routename' of b16 saved string. how do that?

you have deserialise object , use index access data want.

to find b16 entries can filter arrivals list.

import json obj = json.loads(json_string)  # filter b16 objects b16_objs = filter(lambda a: a['routename'] == 'b16',  obj['arrivals'])  if b16_objs:     # first item     b16 = b16_objs[0]     my_estimatedwait = b16['estimatedwait']     print(my_estimatedwait)

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