Sum and group by values in Python lists?

Asked Mar 01 '18 at 12:58

Active Mar 01 '18 at 15:16

Viewed 45 times

Given a list of lists of form [string, int], say:

given_list = [
["adam", 1],["billy", 2],["adam", 3]
]

How would you add all integers coupled with each given string to return a list of lists consisting of the set of the strings coupled to the sum of all integers associated with that string?

desired_list = [
["adam", 4],["billy",2]
]

edited Mar 01 '18 at 15:16

Jignasha Royala

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asked Mar 01 '18 at 12:58

TotalNewb2017

2

this has been answered quite a few times; i'll try to find the dupe – Ma0 Mar 01 '18 at 13:02
@TotalNewb2017 this is may be help you : https://stackoverflow.com/questions/2213923/python-removing-duplicates-from-a-list-of-lists – Jignasha Royala Mar 01 '18 at 13:10

Sum and group by values in Python lists?

0 Answers0