Reading input from file, instead of hard-coding values in your code or getting them from user input, can speed up your workflow and allow you to write modular code. In this lab, you will write a function read_configuration(), which will take a filename as its input and return a list, where every line from the file is a list, which contains each whitespace-separated value as its element.
For example, below are the contents of a file is called board1.txt:
X O .
X O .
X . .
After processing this file, the function should produce the following:
>>> read_configuration("board1.txt")
[['X', 'O', '.'], ['X', 'O', '.'], ['X', '.', '.']]
Note that you can visualize the returned list as follows to see how it maps to the input file
[['x', 'o', '.'],
['x', 'o', '],
['x', '.', ']]
Hint: Remember that split() is a really helpful function. Also, you can get a sense of how to approach file processing by following along.