如何在项目getter函数中将整数数组作为参数传递？

Question

I want to pass an integer array into an itemgetter function. How can I do this?

Below is my code:

// Start of code

start ="1,3,5"
mylist = start.split(',')
key = itemgetter(*start)
or
key = itemgetter(mylist)
print key

Answer 1

You have almost the right idea. If you're trying to index an iterable, eg a list, then the items should be integers instead of strings:

>>> start = "1,3,5"
>>> mylist = [int(x) for x in start.split(',')]
>>> g = itemgetter(*mylist)
>>> g(range(10))
(1, 3, 5)
>>> g('abcdefghi')
('b', 'd', 'f')