python - How to sort in decreasing value first then increasing in second value -


this question has answer here:

let have :

student_tuples = [ ('john', 'a', 15),                    ('peter', 'b', 12),                    ('dave', 'c', 12)]

how sort this:

student_tuples = [('john', 'a', 15), ('dave', 'c', 12), ('peter', 'b', 12)]

what can think is:

from operator import itemgetter  sorted(student_tuples, key=itemgetter(2,0), reverse=true)

but output be:

student_tuples = [('john', 'a', 15), ('peter', 'b', 12), ('dave', 'c', 12)]

and not want. how can using itemgetter or other easier way?

this it:

print sorted(student_tuples, key=lambda t: (-t[2], t[0])) # [('john', 'a', 15), ('dave', 'c', 12), ('peter', 'b', 12)]

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