Question

I have a python dictionary consisting of JSON results. The dictionary contains a nested dictionary, which contains a nested list which contains a nested dictionary. Still with me? Here’s an example:

{'hits':{'results':[{'key1':'value1', 
                    'key2':'value2', 
                    'key3':{'sub_key':'sub_value'}},
                   {'key1':'value3',
                    'key2':'value4',
                    'key3':{'sub_key':'sub_value2'}}
                  ]}}

What I want to get from the dictionary is the sub_vale of each sub_key and store it in a different list. No matter what I try I keep getting errors.

This was my last attempt at it:

inner_list=mydict['hits']['results']#This is the list of the inner_dicts

index = 0
    for x in inner_list:
        new_dict[index] = x[u'sub_key']
        index = index + 1

print new_dict

It printed the first few results then started to return everything in the original dictionary. I can’t get my head around it. If I replace the new_dict[index] line with a print statement it prints to the screen perfectly. Really need some input on this!

for x in inner_list:
    print x[u'sub_key']

Answer 1

After making some assumptions:

[e['key3']['sub_key'] for e in x['hits']['results']]

To change every instance:

for e in x['hits']['results']:
 e['key3']['sub_key'] = 1