Sorting a list of dictionaries based on a value

Question

I am having trouble trying to sort a list of dictionaries based on a value matching a string. Here's an example:

test = [{'username': "1", "password": "test1"},
        {"username": "3", "password": "test2"},
        {"username": "5", "password": "test3"}]

I would like to sort this dictionary based on password = test3, so it would look like:

test = [{"username": "5", "password": "test3"},
        {'username': "1", "password": "test1"},
        {"username": "3", "password": "test2"}]

Any help would be appreciated. Thank you!

So the dict(s) with d['password'] == 'test3' has to come first, with the remaining dicts in any arbitrary order? — chepner
– chepner, Commented Aug 1, 2019 at 19:45
Not really a duplicate, since we're sorting on a value derived from the value, not the value itself. (There may be a better duplicate, though.) — chepner
– chepner, Commented Aug 1, 2019 at 19:53

chepner · Accepted Answer · 2019-08-01 19:51:44Z

2

test.sort(key=lambda x: x['password'] != 'test3')

The .sort() method for lists allows you to use an arbitrary key function. In this case, we use a function that returns False (which equals 0) if the 'password' field equals 'test3'.

edited Aug 1, 2019 at 19:51

chepner

538k77 gold badges594 silver badges746 bronze badges

answered Aug 1, 2019 at 19:48

StardustGogeta

3,3932 gold badges21 silver badges34 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

Sorting a list of dictionaries based on a value

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related