Question

What is the difference between the following set of statements (a) and (b):

1. P = open(“practice.txt”,”r”)
   P.read(10)
2. with open(“practice.txt”, “r”) as
   P: x = P.read()

Answer 1

In code (a), practice.txt will open in read mode and will read 10 bytes from practice.txt file. It does not close the file, because not close() function is called.

In code (b), practice.txt will open in read mode and will read full file content from it. with statement will automatically close the file, when control move out of the with block.