CrackP - ZIP

#!/usr/bin/python
import zipfile
import argparse

def extractFile(zFile, password):
    try:
        zFile.extractall(pwd=password)
        print "[+] Found password = " + password
        return True
    except:
        return False

def main():
    parser = argparse.ArgumentParser("%prog -f <zipfile> -d <dictionary>")
    parser.add_argument("-f", dest="zname", help="specify zip file")
    parser.add_argument("-d", dest="dname", help="specify dictionary file")
    args = parser.parse_args()

    if (args.zname == None):
        print parser.usage
        exit(0)
    elif (args.dname == None):
        zname = args.zname
        dname = 'passwords.txt'
    else:
        zname = args.zname
        dname = args.dname

    zFile = zipfile.ZipFile(zname)
    passFile = open(dname)

    for line in passFile.readlines():
        password = line.strip("\n")
        found = extractFile(zFile, password)
        # Exit if password found
        if found == True:
            exit(0)

    # If it makes it here password has not been found...
    print '[-] Password not found'

if __name__ == "__main__":
    main()