Convert a list of strings [ '3', '1' , '2'] to a list of sorted integers [ 1, 2, 3]

Question

I have: L1 = ['11', '10', '13', '12', '15', '14', '1', '3', '2', '5', '4', '7', '6', '9', '8'] this is a list of strings, right? I need to make it a list of integers as follows: L2 = [11, 10, 13, 12, 15, 14, 1, 3, 2, 5, 4, 7, 6, 9, 8]

finally I will sort it like below: L3 = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15] by L2.sort()

please let me know how I can get to L3 from L1

Answer 1

>>> L1 = ['11', '10', '13', '12', '15', '14', '1', '3', '2', '5', '4', '7', '6', '9', '8'] 
>>> L1 = [int(x) for x in L1]
>>> L1
[11, 10, 13, 12, 15, 14, 1, 3, 2, 5, 4, 7, 6, 9, 8]
>>> L1.sort()
>>> L1
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
>>> L3 = L1

Answer 2

You could do it in one step like this:

L3 = sorted(map(int, L1))

In more detail, here are the steps:

>>> L1 = ['11', '10', '13', '12', '15', '14', '1', '3', '2', '5', '4', '7', '6', '9', '8']
>>> L1
['11', '10', '13', '12', '15', '14', '1', '3', '2', '5', '4', '7', '6', '9', '8']
>>> map(int, L1)
[11, 10, 13, 12, 15, 14, 1, 3, 2, 5, 4, 7, 6, 9, 8]
>>> sorted(_)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]
>>>

Answer 3

L3 = sorted(int(x) for x in L1)