How to close a file in python without assigning a variable

Question

How do I close a file in python after opening it this way:

line = open("file.txt", "r").readlines()[7]

Answer 1

Best to use a context manager. This will close the file automatically at the end of the block and doesn't rely on implementation details of the garbarge collection

with open("file.txt", "r") as f:
    line = f.readlines()[7]