zcat vs gzip module

gistfile1.py

import sys
import gzip


def zcat():
  count = 0
  for line in sys.stdin:
    count += 1
  print count


def direct():
  count = 0
  fn = sys.argv[1]
  f = gzip.open(fn, 'rb')
  for line in f.readlines():
    count += 1
  print count


#zcat()
direct()