Url Visitor

import urllib2
from bs4 import BeautifulSoup
from Tkinter import *
#from Tkinter.messagebox import *
import tkMessageBox
import webbrowser
import os
import time
new=1;
global num1
global num2
global num3
global num4
# Fetch the html file
response = urllib2.urlopen('http://myapk.co.in/python')
html_doc = response.read()

# Parse the html file
soup = BeautifulSoup(html_doc, 'html.parser')

# Format the parsed html file
strhtm = soup.prettify()

# Print the first few characters
usr = soup.username.string
pword = soup.password.string

def show_answer():
    count=0;
    global num1
    global num2
    global num3
    global num4
    url=num1.get();
    a=num2.get();
    b=num3.get();
    c=num4.get();
    print(a)
    while True:
        print(count)
        webbrowser.open(url,new=new);
        count += 1
        print(c)
        time.sleep(int(c))
        os.system("taskkill /T /F /IM " + b)
        if count >=int(a):
            break
    tkMessageBox.showinfo("Congrats" , a + "  Visit completed" )
    mainloop()

def login():
    if us1.get() == usr and pw1.get()== pword:
       i=Label(main,text='Login success').grid(row=7,column=0)
       main.destroy()
       global num1
       global num2
       global num3
       global num4
       def show_answer():
           count=0;
           global num1
           global num2
           global num3
           global num4
           url=num1.get();
           a=num2.get();
           b=num3.get();
           c=num4.get();
           print(a)
           while True:
               print(count)
               webbrowser.open(url,new=new);
               count += 1
               print(c)
               time.sleep(int(c))
               os.system("taskkill /T /F /IM " + b)
               if count >=int(a):
                   break
           tkMessageBox.showinfo("Congrats" , a + "  Visit completed" )
           Button(root, text='Quit', command=root.quit).grid(row=8, column=0, sticky=W, pady=4)
           mainloop()
       def refresh():
           root.destroy()   
       root = Tk()
       root.title("URL Visitor 1.0")
       Label(root, text = "URL:").grid(row=0)
       Label(root, text = "Url Visit count:").grid(row=2)
       Label(root, text = "Default browser as name.exe  e.g.opera.exe, chrome.exe, iexplore.exe, firefox.exe").grid(row=4)
       Label(root, text = "Visit Time").grid(row=6)
       num1 = Entry(root)
       num2 = Entry(root)
       num3 = Entry(root)
       num4 = Entry(root)
       num1.grid(row=1)
       num2.grid(row=3)
       num3.grid(row=5)
       num4.grid(row=7)
       Button(root, text='Logout', command=refresh).grid(row=8, column=0, sticky=W, pady=4)
       Button(root, text='Start', command=show_answer).grid(row=8, column=1, sticky=W, pady=4)
       mainloop()      
    else:
       j=Label(main,text='Login failed').grid(row=7,column=0)
line = 1
main = Tk()
main.title("URL Visitor 1.0")
main.geometry("400x150")
main.wm_iconbitmap('py.ico')
Label(main, text = "User name:").grid(row=0)
Label(main, text = "Password:").grid(row=2)
Label(main, text = "          Welcome to Url Visitor 1.0. For help http://myapk.co.in       ").grid(row=6)

us1 = Entry(main)
pw1 = Entry(main)

us1.grid(row=1)
pw1.grid(row=3)

Button(main, text=' Quit ', command=main.destroy).grid(row=7, column=0, sticky=W, pady=4)
Button(main, text=' Login ', command=login).grid(row=7, column=1, sticky=W, pady=4)
mainloop()