Python/stdin

read from stdin

sys class:

import sys
for line in sys.stdin:
   print "Line: %s" % line

or:

for line in sys.stdin:
   [user,time,query] = line.split('\t')
   if "hello" in query:  # query contains hello
      print user,'\t',query

or:

import sys
data = sys.stdin.readlines()
print "Counted", len(data), "lines."

python buildin

name = raw_input("Enter your name: ")

use 'input()' since python 3!!!