Will `readlines()` close the opened file in python?

Question

In Python, will

file_name = ''
content_list = open(file_name, 'r').readlines()

automatically close the opened file?

Answer 1

No, you should use the Context Manager for it:

file_name = 'abc.txt'
with open(file_name, 'r') as txtFile:
    content_list = txtFile.readlines()

Answer 2

No, you'd need to use with. Either way, readlines will not close the file.

with open(file_name, 'r') as f:
    content_list = f.readlines()