Python: How do I convert an array of strings to an array of numbers? [duplicate]

Question

Possible Duplicate:
What is the easiest way to convert list with str into list with int?

current array: ['1','-1','1'] desired array: [1,-1,1]

Answer 1

Use int which converts a string to an int, inside a list comprehension, like this:

desired_array = [int(numeric_string) for numeric_string in current_array] 

Answer 2

List comprehensions are the way to go (see @sepp2k's answer). Possible alternative with map:

list(map(int, ['1','-1','1']))