CODEWITHSUNDEEP
pythonsortingtupleslist-comprehension
Ken
Ken

Reputation: 13

Sorting tuple genereated by list comprehension in python

I'm having trouble sorting individual tuple created by a list comprehension. Say we have:

words = [(a, b, c) for a in al for b in bl for c in cl]

Now I want to sort each tuple (a, b, c) by doing:

map(lambda x: sorted(x), words)

which gives me the error: 'tuple' object is not callable.

I also tried:

for i in range(len(words)):
    out = [words[i][0], words[i][1], words[i][2]]
    print out.sort()

which prints a bunch of Nones.

What am I missing? Thanks in advance.

Upvotes: 1

Views: 875

Answers (1)

BrenBarn
BrenBarn

Reputation: 251353

You could just sort the tuples as part of the creation:

words = [sorted((a, b, c)) for a in al for b in bl for c in cl]

Note that this will give you a list of lists, not a list of tuples, because sorted returns a list. If you really want tuples you'll have to do

words = [tuple(sorted((a, b, c))) for a in al for b in bl for c in cl]

Upvotes: 4

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