Unpack list and cast at the same time

Question

I have a long list of stings which need to be passed into a function as integers. What I am doing right now is:

my_function(int(list[0]), int(list[1]), int(list[2]), int(list[3])...)

But I know I can make a much shorter function call by unpacking the list:

my_function(*list)

I was wondering if there was a way to combine int() casting with list unpacking *, something like this:

my_function(*int(list))  #Doesn't work

Answer 1

Use the built-in method map, e.g.

my_function(*map(int, list))

Alternatively, try list-comprehension:

my_function(*[int(x) for x in list])

BTW:

Please don't use list as name for a local variable, this will hide the built-in method list.

It is common use to append an underscore for variable-names that would otherwise hide built-in methods / conflict with keywords.

Answer 2

mapping is the answer:

map(int, my_list)