字符串索引必须是整数 json

Question

i have a json data https://steamcommunity.com/id/RednelssGames/inventory/json/730/2 need get names of all the items

r = requests.get('https://steamcommunity.com/id/RednelssGames/inventory/json/730/2')
if r.json()['success'] == True:
     for rows in r.json()['rgDescriptions']:
         print(rows['market_hash_name'])

getting error string indices must be integers

Answer 1

From the link you provided:

"rgDescriptions":{"4291220570_302028390":

rgDescriptions doesn't return an array, but an object (a dictionary, in this case) (notice the opening curly brace ( { ) rather than a regular square brace ( [ )).

By using for rows in r.json()['rgDescriptions']: you end up iterating over the dictionary's keys. The first key of the dictionary seems to be "4291220570_302028390" , which is a string.

so when you do print(rows['market_hash_name']) , you're attempting to access the 'market_hash_name' "index" of your rows object, but rows is actually a string, so it doesn't work.

Answer 2

Change the for-loop as follows:

                for rows in r.json()['rgDescriptions'].values():
                    print(rows['market_hash_name'])

By iterating over a dictionary like you did, you get the keys and not the values (rows). If you want to iterate over the values, you have to iterate over the return value of dict.values() .