Brute Force locked ZIP file

# get dictionary file here: http://www.math.sjsu.edu/~foster/dictionary.txt
import zipfile
import sys
import itertools
def begin():
    exit = 0
    x = 0
    zip = zipfile.ZipFile(file, "r") # zip file name
    with open('dictionary.txt') as f: # dictionary file name
        con = f.read().splitlines() # set con to contain the text document as a list
        while x != 349999: # number of words in dictionary minus 1
            if exit != 0:
                sys.exit(0)
            try:
                password = con[x] # set password to x in list
                zip.setpassword(password) # try it
                zip.extractall()
                zip.printdir()
                zip.close()
                x = 349999
                print '************************'
                print password, 'accepted' # if password is correct
                print '************************'
                exit = 1
            except: # if password is wrong
                print password, 'bad'
                x += 1 # x + 1
    chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890_$&#@ " # possible characters
    for length in range(0,20):
       for attempt in itertools.product(chars,repeat = length):
          if exit != 0:
              sys.exit(0)
          password = ''.join(attempt)
          print password, 'bad'
          try:
              zip.setpassword(password) # try it
              zip.extractall()
              zip.printdir()
              zip.close()
              print password, 'accepted'
              exit = 1
          except:
              pass
file = raw_input('Locked ZIP file name: ')
begin()