[python]zip password crack script

#!/usr/bin/python
import zipfile
import optparse
from threading import Thread
def extractFile(zFile,password):
    try:
        zFile.extractall(pwd=password)
        print '[+] Found password '+password
    except:
        pass
def main():
    parser = optparse.OptionParser("usage %prog -f <zipfile> -d <dictionary>")
    parser.add_option('-f',dest = 'zname',type = 'string',help = 'specify the zipfile')
    parser.add_option('-d',dest = 'dname',type = 'string',help = 'specify the dictionary')
    (options,args) = parser.parse_args()
    if(options.zname == None) | (options.dname == None):
        print parser.usage
        exit(0)
    else:
        zname = options.zname
        dname = options.dname
    zFile = zipfile.ZipFile(zname)
    passFile = open(dname)
    for line in passFile.readlines():
        password = line.strip('\n')
        t = Thread(target=extractFile,args=(zFile,password))
        t.start()
if __name__ == '__main__':
    main()