kivystart.py

#file name: kivystart.py

import os
os.environ['KIVY_TEXT'] = 'pygame'

import kivy
kivy.require('1.9.2')

from kivy.app import App
from kivy.uix.gridlayout import GridLayout
from kivy.uix.label import Label
from kivy.uix.textinput import TextInput

class LoginScreen(GridLayout):

     def __init__(self, **kwargs):
        super(LoginScreen,self).__init__(**kwargs)
        self.cols = 2
        self.add_widget(Label(text="User Name"))
        self.username = TextInput(multiline=False)
        self.add_widget(self.username)
        self.add_widget(Label(text='Password'))
        self.password = TextInput(password=True,multiline=False)
        self.add_widget(self.password)


#subclassing
class MyApp(App):

    #implementing the build function
    def build(self):
        return LoginScreen()

        #instantiating and running it
if __name__ == '__main__':
    MyApp(). run()