Dictionary values search

Question

I have a JSON file which I have converted into a dictionary using the code below:

Newdict=r.json()

r has the same data which newdict has.

Newdict= {'name':'jas','surname':'kumar','age':19,'country':'IN'}
{'name':'arch','surname':'sahu','age':29,'country':'Sl'}
{'name':'salman','surname':'khan','age':20,'country':'pk'}
{'name':'raju','surname':'reddy','age':32,'country':'usa'}

I want search for something like age = 20 then print salman.

What have you tried so far? Can you post any example code of your attempts? — Jason, Jun 20 '20 at 02:59
Check out the most upvoted answer here https://stackoverflow.com/a/8023337/503835. Apply the loop to your code. — eNc, Jun 20 '20 at 06:15

Rayan Ral · Answer 1 · 2020-06-19T15:42:55.613

1

There are several dicts in the example, so you probably have some kind of list? Then you can do something like:

[d['name'] for d in dictList if d['age'] == 20]

Upd. As Ann Zen pointed out in the comments, this code would return you a list with a single value (or several values, if multiple dicts have age=20). If you're sure that there's only one value, that fits your filter, you can add [0] in the end, to get first result from that list.

edited Jun 19 '20 at 15:42

answered Jun 19 '20 at 15:14

Rayan Ral

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1

This will return the name in a list. Add a subscription of `[0]` to only retrieve the name in a string. – Red Jun 19 '20 at 15:18

score 0 · Accepted Answer · answered Jun 19 '20 at 15:14

0

You can do

Newdict= [{'name':'jas','surname':'kumar','age':'19','country':'IN'},
{'name':'arch','surname':'sahu','age':'29','country':'Sl'},
{'name':'salman','surname':'khan','age':'20','country':'pk'},
{'name':'raju','surname':'reddy','age':'32','country':'usa'}]

for i in Newdict:
    if int(i['age']) == 20:
        print(i['name'])

OR

for i in Newdict:
    if i['age'] == '20':
        print(i['name'])

OR in one line

print([i['name'] for i in Newdict if int(i['age']) == 20][0])

Output

salman

answered Jun 19 '20 at 15:14

Leo Arad

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While making Dictionary from json do i need to declare Dictionary eg d =[ ] d=r.json() – Amit Jun 19 '20 at 15:44
If the json is a list of dictionaries you can do only the r.json() – Leo Arad Jun 19 '20 at 15:55

score 0 · Answer 3 · answered Jun 19 '20 at 15:14

You can use dictionary keys to retrieve their corresponding values:

Newdict = [{'name':'jas','surname':'kumar','age':'19','country':'IN'},
           {'name':'arch','surname':'sahu','age':'29','country':'Sl'},
           {'name':'salman','surname':'khan','age':'20','country':'pk'},
           {'name':'raju','surname':'reddy','age':'32','country':'usa'}]

for d in Newdict:
    if int(d['age']) == 20:
        print(d['name'])

Output:

salman

Dictionary values search

3 Answers3