python: read json and loop dictionary

Question

I\'m learning python and i loop like this the json converted to dictionary: it works but is this the correct method? Thank you :)

import json

output_file =          


        

Answer 1

That seems generally fine.

There's no need to first read the file, then use loads. You can just use load directly.

output_json = json.load(open('/tmp/output.json'))

Using i and k isn't correct for this. They should generally be used only for an integer loop counter. In this case they're keys, so something more appropriate would be better. Perhaps rename i as container and k as stream? Something that communicate more information will be easier to read and maintain.

You can use output_json.iteritems() to iterate over both the key and the value at the same time.

for majorkey, subdict in output_json.iteritems():
    print majorkey
    for subkey, value in subdict.iteritems():
            print subkey, value

Note that, when using Python 3, you will need to use items() instead of iteritems(), as it has been renamed.

Answer 2

json_data = json.loads(url)

If list is there, then iterate:

 for majorkey, subdict in json_data.iteritems():
   for one_majorkey in subdict:
    for subkey, value in one_majorkey.iteritems():
        for each_subkey, valu_U in value.iteritems():
            for each_sub_subkey, value_Q in valu_U.iteritems():
                for each_sub_sub_subkey, value_num in value_Q.iteritems():
                    print each_sub_sub_subkey, value_num