如何读取 Python 3 中输入文件的特定部分？

Question

Let's say I have an input file with the following data:

50 50
A
B
C
D

I know that I can extract the first line using the map function as follow:

x,y= map(int, input().split())

But I am unsure how I can retrieve the next 4 lines and put them into a list. I tried using the splitlines() function, since each value is on a seperate line, but that only returns the first value.

strings = input().splitlines()

How can I choose what parts of the input file I want to read and then store them in respective variables?

Answer 1

Open the file, read all the lines into a list, do what you want with them

with open("[filename]", "r") as f:
    lines = list(map(lambda l: l.strip(), f.readlines()))

# do whatever with the lines here
# use lines.pop(0) if you want to remove the line from the list