Finding The Largest Number in a Nested List in Python

Question

I would like to put the max number(s) to a new array, I\'ve tried every thing that I can think of and none seem to work....(adding to an empty result array, concat, etc)

Answer 1

Just apply max to every sublist:

Python 2:   map(max, lists)
Python 3:   list(map(max, lists))

Of course the latter only works if you don't shadow the built-in list function with your variable (which is a bad idea anyway, so I used the name lists instead).

>>> lists = [[21, 34, 345, 2], [555, 22, 6, 7], [94, 777, 65, 1], [23, 54, 12, 666]]
>>> map(max, lists)
[345, 555, 777, 666]