What is the correct way to use the map() function?

Question

Python

In my mind, I couldn't figure out how. Please help, I will be grateful
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I need to take numbers from a file and transfer them to a list. Yes, you can, of course, with the with argument, but I need less code, and the map () function is just short and simple.
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num.txt
10 20

And I need to use the map argument to add all these numbers to the list

Answer 1

And just call split and get a list? Or do you need a list of type int

numbers = '10 20 30 40 4 6 7 22 2'

l = list(map(int, numbers.split()))

Either list comprehension
l = [int(number) for number in numbers.split()]