Kivy class..

from kivy.app import App
from kivy.lang import Builder
from kivy.uix.screenmanager import ScreenManager, Screen
from kivy.properties import NumericProperty
from kivy.uix.widget import Widget
from time import sleep

kv = """
Tela_Programar:
    FloatLayout:
        size_hint:(None,None)
        size:800,700
        canvas.before:
            Color:
                rgba:0,0,0,1
            Rectangle:
                size:self.size
                pos:self.pos
        Button:
            text:'ENTER'
            color:1,1,1,1
            font_size:'20sp'
            size_hint:(None,None)
            size:(100,30)
            on_press:root.Criar_list()
            x:300
            y:80
        Button:
            id:eu
            text:'Eu '
            color:1,1,1,1
            font_size:'20sp'
            size_hint:(None,None)
            size:(100,30)
            x:300
            y:500
        Button:
            id:gosto
            text:'Gosto'
            color:1,1,1,1
            font_size:'20sp'
            size_hint:(None,None)
            size:(100,30)
            x:300
            y:400
        Button:
            id:praia
            text:'Praia'
            color:1,1,1,1
            font_size:'20sp'
            size_hint:(None,None)
            size:(100,30)
            x:300
            y:300
"""


class Tela_Programar(Screen):
    def __init__(self, **kwargs):
        super(Tela_Programar, self).__init__(**kwargs)
        self.lop = [[]]
        self.Ld = None
        self.Le = None

    def criar_lista(self):
        self.cta = 0
        Qtc = 10
        self.lop[:] = []
        zero = 300
        while self.cta < Qtc:
            self.cta += 1
            for lo in range(1, 3):
                if lo == 1:
                    self.lop.append(['Ld', zero + 200, zero + 200, zero + 200])
                else:
                    self.lop.append(['Le', zero - 200, zero - 200, zero - 200])

        # Apresentação
        Aa = 0
        Ld = str('Ld')
        Le = str('Le')
        for xa in self.lop:
            ix = self.lop[Aa][0]
            for ax in range(2):
                if ix == Ld:
                    # desloca lado direito
                    self.ids.eu.x = self.lop[Aa][1]
                    self.ids.gosto.x = self.lop[Aa][2]
                    self.ids.praia.x = self.lop[Aa][3]
                    sleep(0.1)
                    print('xa=', xa, 'ix=', ix, 'Ld=', Ld, 'Aa=', Aa)
                else:
                    # desloca lado esquerdo
                    self.ids.eu.x = self.lop[Aa][1]
                    self.ids.gosto.x = self.lop[Aa][2]
                    self.ids.praia.x = self.lop[Aa][3]
                    sleep(0.2)
            Aa += 1


class Duvida_List(App):
    def build(self):
        return Builder.load_string(kv)
Duvida_List().run()