CODEWITHSUNDEEP
pythonsorting
Merlin
Merlin

Reputation: 25639

In python Sorting a list of tuples?

How do you sort a list by elemant thats a tuple? Let say below is the list LL. I want to sort ID2 -- LL[1] which is a tuple as asc. How would I do it. 

           Id,  Id2    CCC
           A123 A120 '2011-03'
  LL=      A133 A123 '2011-03'
           D123 D120 '2011-04'
           D140 D123 '2011-04'

Upvotes: 0

Views: 1021

Answers (2)

ThiefMaster
ThiefMaster

Reputation: 318508

Have a look at http://wiki.python.org/moin/HowTo/Sorting/

sorted(LL, key=itemgetter(1)) might do what you want.

Please note that you have to from operator import itemgetter to get the itemgetter function.

In [1]: LL = (('A123', 'A120', '2011-03'), ('A133', 'A123', '2011-03'), ('D123', 'D120', '2011-04'), ('D140', 'D123', '2011-04'))

In [2]: from operator import itemgetter

In [3]: sorted(LL, key=itemgetter(1))
Out[3]:
[('A123', 'A120', '2011-03'),
 ('A133', 'A123', '2011-03'),
 ('D123', 'D120', '2011-04'),
 ('D140', 'D123', '2011-04')]

Upvotes: 4

Arihant Nahata
Arihant Nahata

Reputation: 1810

You can go for:

LL.sort(key=lambda x:x[1])

Where 1 is the index of the element of the tupple.

Upvotes: 0

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