Python - Ayuda con programa en python

import re

def corre():

        f = open('correos.txt','r')

        str = f.readlines()

        for l in str:

                pat = "^[(a-z0-9\_\-\.)]+@[(a-z0-9\_\-\.)]+\.[(a-z)]{2,4}$"

                resul = re.findall(pat, str)

        if (resul):

                return "Correo correcto"

        else:

                return "Correo incorrecto"

        f.close()

print corre()

import re

def corre():

	f = open('correos.txt','r')

	str = f.readlines()

	for l in str:

		pat = "^[(a-z0-9\_\-\.)]+@[(a-z0-9\_\-\.)]+\.[(a-z)]{2,4}$"

		resul = re.findall(pat, l)

		if (resul):

			print "%s Correo correcto" % l.strip()

		else:

			print "%s Correo incorrecto" % l.strip()

	f.close()

corre()

fenixer@hotmail.com Correo correcto

froster@hotmail.com Correo correcto

miguel_ito@hotmail.com Correo correcto

dvid@hotmail Correo incorrecto