loginpage2.py

import kivy
from kivy.app import App
from kivy.uix.label import Label
from kivy.uix.button import Button
from kivy.uix.widget import Widget
from kivy.uix.textinput import TextInput
from kivy.uix.gridlayout import GridLayout
from kivy.uix.floatlayout import FloatLayout
from kivy.uix.boxlayout import BoxLayout
from kivy.lang import Builder
from kivy.core.window import Window


class loginscreen(GridLayout):
    def __init__(self,**kwargs):
        super(loginscreen,self).__init__(**kwargs)
        self.cols=2
        self.label='Username'
        self.color=1,0,0,1

        for i in range(5):

            self.password=False
            if i is 1:
                self.label='Password'
                self.password=True
            elif i is 2:
                self.label='Email'
            elif i is 3:
                self.label='Email Password'
                self.password=True
            elif i is 4:
                self.label='Address'
            self.add_widget(Button(text=self.label,color=self.color))
            self.username=TextInput(multiline=False, password=self.password)
            self.add_widget(self.username)


class app(App):
    def build(self):
        Window.clearcolor=(1,1,1,1)
        return loginscreen()

if __name__=='__main__':
    app().run()