How do you read from stdin?

Question

I\'m trying to do some of the code golf challenges, but they all require the input to be taken from stdin. How do I get that in Python?

Answer 1

For Python 3 that would be:

# Filename e.g. cat.py
import sys

for line in sys.stdin:
    print(line, end="")

This is basically a simple form of cat(1), since it doesn't add a newline after each line. You can use this (after You marked the file executable using chmod +x cat.py such as:

echo Hello | ./cat.py