stdin stdout in Python

import sys
import time
import copy
import csv
import re

while True:

#take string from stdin

    s=sys.stdin.readline()
    sss=[str(word).strip() for word in s.splitlines(False)]

#if string="Q" than exit

    if sss[0]=='Q': break
    try:
        for ss in sss:

#modify string with regexp

            pattern=re.compile('^(\d{6});(\d{6})$')
            u=pattern.search(ss).groups()
            try:

#my task
                seq1,seq2=getSeq(u[0],u[1])
            except:
                stseq1=list()
                trseq1=list()

#put results into stdout
            print(';'.join(str(j) for j in seq1) ,sep=';', end='\n', file=sys.stdout)
            print(';'.join(str(j) for j in seq2) ,sep=';', end='\n', file=sys.stdout)