show math output result in kivy label or textinput

[Degenerate Tech]

how to load beautiful math expression of sympy in kivy textinput or label

from __future__ import division

from sympy import *

from kivy.app import App

from kivy.uix.textinput import TextInput

from kivy.uix.button import Button

class MyApp(App):

    def f(self):

        

        

        x, y, z, t = symbols('x y z t')

        k, m, n = symbols('k m n', integer=True)

        f, g, h = symbols('f g h', cls=Function)

        

        x = symbols('x')

        a = Integral(cos(x)*exp(x), x)

        c=Eq(a, a.doit())

        init_printing(use_unicode=True) 

        pprint(c)

        return  c

    def build(self):

        return TextInput(text=str(self.f()).encode('utf-8'))

MyApp().run()