What does sys.stdin read?

Question

I get how to open files, and then use Python\'s pre built in functions with them. But how does sys.stdin work?

for something in sys.stdin:
    some stuff he         


        

Answer 1

According to me sys.stdin.read() method accepts a line as the input from the user until a special character like Enter Key and followed by Ctrl + D and then stores the input as the string.

Control + D works as the stop signal.

Example:

import sys

input = sys.stdin.read()
print(input)
tokens = input.split()
a = int(tokens[0])
b = int(tokens[1])
print(a + b)

After running the program enter two numbers delimited by space and after finishing press Control + D once or twice and you will be presented by the sum of the two inputs.