I have a JSON file, and what I am trying to do is getting this specific field '\_id'. Problem is that when I use `json.load('input_file')`, it says that my variable `data` is a list, not a dictionary, so I can't do something like:

```
for value in data['_id']:
    print(data['_id'][i])

```

because I keep getting this error: **TypeError: list indices must be integers or slices, not str**

What I also tried to do is:

```
data = json.load(input_file)[0]

```

It kinda works. Now, my type is a dictionary, and I can access like this: `data['_id']`
But I only get the first '\_id' from the archive... 

So, what I would like to do is add all '\_id' 's values into a list, to use later.

```
input_file = open('input_file.txt')
data = json.load(input_file)[0] 
print(data['_id'])# only shows me the first '_id' value

```

Thanks for the help!

```
[{
 "_id": "5436e3abbae478396759f0cf",
 "name": "ISIC_0000000",
 "updated": "2015-02-23T02:48:17.495000+00:00"
},
{
 "_id": "5436e3acbae478396759f0d1",
 "name": "ISIC_0000001",
 "updated": "2015-02-23T02:48:27.455000+00:00"
},
{

 "_id": "5436e3acbae478396759f0d3",
 "name": "ISIC_0000002",
 "updated": "2015-02-23T02:48:37.249000+00:00"
},
{
 "_id": "5436e3acbae478396759f0d5",
 "name": "ISIC_0000003",
 "updated": "2015-02-23T02:48:46.021000+00:00"
 }]

```