quadratic equations with kivy and python...

gistfile1.txt

I wrote a quadratic equations GUI based script..
I used kivy and python, the formula is also the Almighty formula.. 
I used the floatlayout so that it maintains it's look even on landscape...

here's the code below...

for the. py file.....

#-*-coding:utf8;-*-
#qpy:2
#qpy:kivy

from math import sqrt 
from kivy.app import App
from kivy.uix.floatlayout import FloatLayout 
from kivy.lang import Builder 


class for_quadratic(FloatLayout):
    def solve_solution(self):
        self.result_box= self.ids.result_label 
        self.value_a=self.ids.value_one.text 
        self.value_b=self.ids.value_two.text 
        self.value_c=self.ids.value_three.text
        
        if (self.value_a==""):
            self.value_a="1"
        if (self.value_b==""):
            self.value_b="1"
        if (self.value_c==""):
            self.value_c="1"
            
        self.a=int(self.value_a)**2
        self.b=int(self.value_b)
        self.c=int(self.value_c)
    
        self.g=self.b**2
        self.h=4*self.a*self.c
        self.I=abs(self.g-self.h)
        self.k=self.I 
        self.formula= sqrt(self.k)
        self.root_one=(-self.b-self.formula)/2*self.a
        self.root_two=(-self.b+self.formula)/2*self.a
        self.result_box.text=("the roots are \n {} and {}"
        .format(round(self.root_one),round(self.root_two)))




class QuadraticApp(App):
    def build(self):
         return for_quadratic()





QuadraticApp().run()



and for the kv file....



###kivy for quadratuc 

<for_quadratic>:
    FloatLayout:
	    Label:
	        id: main_label
	        text:"QUADRATIC EQUATIONS"
	        size_hint: None,None
	        width: root.width/2
	        height: 45
	        font_size: 30
	        bold: True
	        pos_hint: {"x":.25,"top":1}
	        
	    Label:
	        id: label_one
	        text: "VALUE A"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint:{"x":0,"y":.8}
	
	    TextInput:
	        id: value_one
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False 
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.8}
	        
	    Label:
	        id: label_two 
	        text: "VALUE B"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint: {"x":0,"y":.7}
	        
	    TextInput:
	        id: value_two 
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.7}
	        
	    Label:
	        id: label_three 
	        text: "VALUE C"
	        size_hint: None,None
	        width:root.width/2
	        font_size: 20
	        height: 40
	        bold: True
	        pos_hint: {"x":0,"y":.6}
	        
	    TextInput:
	        id: value_three 
	        hint_text: "type"
	        size_hint: None,None
	        width: root.width/2
	        height: 55
	        font_size: 20
	        bold: True
	        multiline: False
	        padding: root.height/self.height
	        pos_hint: {"x":.5,"y":.6}
	        
	    Button:
	        id: submit_button 
	        text: "CALCULATE"
	        size_hint: None,None
	        width: root.width/2
	        font_size: 25
	        height: 57
	        italic: True
	        pos_hint: {"x":.5,"y":.5}
	        on_press: root.solve_solution()
	        
	    Label:
	        id: result_label
	        text:"...."
	        size_hint: None,None
	        width: root.width
	        height: 100
	        font_size: 25
	        bold: True
	        pos_hint: {"x":0,"y":.3}
	               
	    Label:
	        text: " by vitriol"
	        size_hint: None,None
	        width: root.width/2
	        font_size: 20
	        color: 0,1,0,1
	        pos_hint: {"x":.25,"y":0}