how to open and close a file in python code example

Example 1: reopen closed file python

open(f.name).read()
# prints the content of closed and reopened file

Example 2: do i need to close a file in python3 in with statement

with open('/etc/passwd') as f:
    for line in f:
        print(line)
# by using with statement u have no need to close the file.it auto exists after its use.