How to read a file line-by-line into a list?

Question

How do I read every line of a file in Python and store each line as an element in a list? I want to read the file line by line and append each line to the end of the list.

Answer 1

line_by_line = []

with open('filename.txt') as f: # closes file buffer for you

line_by_line = [f.read().splitlines()]