Ndtyjky

i am new to python and json I'm trying to get a specific value for each of the objects that are stored. i am trying to print all of the attributes stores under "NAME" and "OBJECTID" . how can i do this? i have been looking at different answers but I'm still confused. (EDIT: most of the objects in the whole file have different names, my objective is to create a list of all of the names.)
here is a small sample of the file i am using.
thank you for your help!

    {"type":"FeatureCollection", "features": [

{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[552346.2856999999,380222.8998000007]]]]},"properties":{"OBJECTID":1,"STFID":"55001442500001","NAME":"0001"}},

{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[529754.7249999996,409135.9135999996],[529740.0305000003,408420.03810000047]]]},"properties":{"OBJECTID":2,"STFID":"55001537250001","NAME":"0001","COUSUBFP":"53725"}},

{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[508795.9363000002,441655.3672000002],[508813.49899999984,441181.034]]]},"properties":{"OBJECTID":6278,"STFID":"55141885750001","NAME":"0001","COUSUBFP":"88575"}}

]}

Assuming your json is like

json = {"type": "FeatureCollection", 

        "features": [

            {"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[552346.2856999999,380222.8998000007]]]},"properties":{"OBJECTID":1,"STFID":"55001442500001","NAME":"0001"}},

            {"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[529754.7249999996,409135.9135999996],[529740.0305000003,408420.03810000047]]]},"properties":{"OBJECTID":2,"STFID":"55001537250001","NAME":"0001","COUSUBFP":"53725"}},

            {"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[508795.9363000002,441655.3672000002],[508813.49899999984,441181.034]]]},"properties":"OBJECTID":6278,"STFID":"55141885750001","NAME":"0001","COUSUBFP":"88575"}}

            ]}

You can get a list of tuples with OBJECTID, NAME using a list comprehension like this:

oid_name = [(feature['properties']['OBJECTID'], feature['properties']['NAME']) for feature in json['features']]

which will evaluate to

[(1, '0001'), (2, '0001'), (6278, '0001')]

in this example.

If your need is to look up the name for an object, you might find it more useful to use a dictionary for this:

names = {feature['properties']['OBJECTID']: feature['properties']['NAME'] for feature in json['features']}

This will allow you to look up the name like this:

>>> names[1]

'0001'