Reads lines from stdin, appends a timestamp and prints to stdout

ts

#!/usr/bin/env python
from __future__ import print_function
 
from datetime import datetime
import sys
 
def main():
    try:
        while 1:
            line = sys.stdin.readline()
            if line == '':
                break
            print("{}\t{}".format(datetime.now().isoformat(), line), end="")
            sys.stdout.flush()
    except KeyboardInterrupt:
        pass
    return 0
 
if __name__ == "__main__":
    sys.exit(main())