How to specify 2 keys in python sorted(list)?

Question

How do I sort a list of strings by key=len first then by key=str? I\'ve tried the following but it\'s not giving me the desired sort:

Answer 1

If you don't want to use lambda:

from operator import itemgetter
ls = ['foo','bar','foobar','barbar']
print sorted([ [x,len(x)] for x in ls ] ,key=itemgetter(1,0))
# print [s[0] for s in sorted([ [x,len(x)] for x in ls ] ,key=itemgetter(1,0))]