What's the equivalent for while (cin >> var) in python?

Question

In online contests, when the length of input is not specified and reading the input file directly through the program is not possible, one can use this code in C++:

while (cin >> var)
{
    //do something with var
}

What's the equivalent for python?

• Without using any file-related function such as open() write() ...

Answer 1

There's no direct equivalent in Python. But you can simulate it with two nested loops:

for line in sys.stdin:
    for var in line.split():

If you need something other than a string you'll need to convert it in a separate step:

        var = int(var)

Answer 2

This could be helpfull.

import sys

for line in sys.stdin:
    #Do stuff