python JSON only get keys in first level

Question

Here is a very long and complicated json object but what should I do if I only want to get the items/keys in the first level?

Example:

{
    "1": "a",
    "3": "b",
    "8": {
        "12": "c",
        "25": "d"
    }
}
I want to get 1,3,8 as result!

I found this code:

for key, value in data.iteritems():
    print key, value
But it prints all keys (also 12 and 25)

Answer 1

You just need a simple .keys()

>>> dct = {
...     "1": "a",
...     "3": "b",
...     "8": {
...         "12": "c",
...         "25": "d"
...     }
... }
>>>
>>> dct.keys()
['1', '8', '3']
>>> for key in dct.keys(): print key
...
1
8
3
>>>
If you need a sorted list:

keylist = dct.keys()
keylist.sort()

Hope it helps!!

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Thanks!