Free SMS sender

[code]from Tkinter import *
import urllib, urllib2

class Application(Frame):
def __init__(self, master):
Frame.__init__(self, master)
self.grid()
self.create_widget()
def create_widget(self):

self.lbl = Label(self, text = "From: (hello@abc.com)")
self.lbl.grid(row = 0, column = 0)

self.addr = Entry(self, width = 32, bg = "#888")
self.addr.grid(row = 0, column = 1, sticky = W)

self.lbl = Label(self, text = "Number: ")
self.lbl.grid(row = 3, column = 0)

self.num = Entry(self, width = 3, bg = "#888")
self.num.grid(row = 3, column = 1, sticky = W)
self.num1 = Entry(self, width = 3, bg = "#888")
self.num1.grid(row = 3, column = 1, padx=35,pady=1, sticky = W)
self.num2 = Entry(self, width = 4, bg = "#888")
self.num2.grid(row = 3, column = 1, padx=70,pady=1, sticky = W)

self.lbl = Label(self, text = "Message: (120 Max) ")
self.lbl.grid(row = 6, column = 0)

self.mess = Entry(self, width = 45, bg = "#888")
self.mess.grid(row = 6, column = 1, sticky = W)

self.txtbox = Text(self, width = 60, height = 4, relief = "sunken", font=('Georgia', 8, 'bold'), bg = "#888")
self.txtbox.grid(row = 8, column = 0, columnspan = 2, sticky = W)

self.bttn1 = Button(self, text = "Send", relief = "raised", font=('courier', 10, 'bold'), fg = "#1569C7", bg = "#18181C", command = self.send)
self.bttn1.grid(row = 9, columnspan = 2, sticky = "WE")

self.clear = Button(self, text="Clear", font=('Georgia', 8), command = self.clear)
self.clear.grid(row = 10, column = 1,sticky= E)

def send(self):
a = self.addr.get()
n = self.num.get()
n1 = self.num1.get()
n2 = self.num2.get()
m = self.mess.get()
host = "http://www.txtdrop.com/"

if len(m) > 120:
self.txtbox.insert(END, "Message Length Over (Max: 120 characters)")
self.mess.delete(0, END)
elif len(n) != 3 or len(n1) != 3 or len(n2) != 4:
self.txtbox.insert(END, "Misformed Number")
self.num.delete(0, END)
self.num1.delete(0, END)
self.num2.delete(0, END)
else:
login_form_seq = [
('emailfrom',a),
('npa',n),
('exchange',n1),
('number',n2),
('body',m),
('submitted','1'),
('submit','Send')]
login_form_data = urllib.urlencode(login_form_seq)
opener = urllib2.build_opener()
try:
opener.addheaders = [('User-agent', 'Mozilla/5.0')]
opener.open(host, login_form_data)
self.txtbox.insert(END, "FROM: "+a)
self.txtbox.insert(END, "NUMBER: "+n+"-"+n1+"-"+n2)
self.txtbox.insert(END, "Message: "+m)
self.txtbox.insert(END, "Message Sent!!!")
except(urllib2.URLError), msg:
self.txtbox.insert(END, "Message Failed")

def clear(self):
self.addr.delete(0, END)
self.num.delete(0, END)
self.num1.delete(0, END)
self.num2.delete(0, END)
self.mess.delete(0, END)
self.txtbox.delete(0.0, END)

root = Tk()
root.title("Send Free SMS")
root.geometry("500x225")
root.config(background="#18181C")
app = Application(root)
root.mainloop()
[/code]