python close file descriptor question

Question

I think this question is more of a \"coding style\" rather than technical issue.

Said I have a line of code:

buf = open(\'test.txt\',\'r\').readlines         


        

Answer 1

It will stay in memory until the garbage collector closes it. You should always explicitly close your file descriptors. Just do something like this:

with open('test.txt', 'r') as f:
    buf = f.readlines()