Converting string items of a list into an integer

Question

I'm trying to make a list such as this (it is not nested list its just seperate list):

[0,0]

[1,0]

[2,0]

The list must be separate from each other.

The elements of the list has to be integer and the value of the elements must be less than 10.

The element of the list comes from a file which looks like this:

0-0 (these are strings)

1-0

2-0

Here is my code:

with open(_file) as lines:
    for line in lines:
        for element in line.split():
            s_lines = element.split('-')
            for i in s_lines:
                num = int(i)
            print(s_lines)

this gives ['0','0'] ['1','0'] ['2','0'], and this doesnt allow me to verify that the value of the element in each list is less than 10

Can some please help me convert the elements of the list into an integer while keeping the format of 2 elements per list

you are not storing your int(i) in s_lines again that is why it is still string — Jatin Mehrotra, Mar 23 '21 at 07:08

score 0 · Accepted Answer · answered Mar 23 '21 at 07:08

You're printing s_lines not num

 for i in s_lines:
      num = int(i)
      print(s_lines)

you need to store this converted integer value in the s_lines variable, something like this:

s_lines = [int(num) for num in s_lines]
print(s_lines)

But the above code I have mentioned is for 1D list only, you have list of list, so you need to identify how you can do that

Converting string items of a list into an integer

1 Answers1