Calcular o valor do ingresso do cinema dadas as condicoes pre estabelecidas

movie.py

import unittest
from enum import Enum

class Cinema():
    """
    Autor: fzmaster
    Data: 28/12/2010
    Problema: Movie Tickets
              http://codingkata.org/katas/unit/movie-tickets

    Calcular o valor do ingresso do cinema dadas as condicoes pre estabelecidas
    """
    precoTicket = 0.00
    pessoas = 0
    precoTotal = 0.00
    dias = Enum('DOM', 'SEG', 'TER', 'QUA', 'QUI', 'SEX', 'SAB')
    dia = ''
    
    def startPurchase(self, runtime, day, isParquet, is3D):
        """
        Explicacao da funcao
        """
        self.dia = day
        if runtime > 120:
            self.precoTicket += 1.50
        if bool(is3D):
            self.precoTicket += 3.00
        if not bool(isParquet):
            self.precoTicket += 2.00
        if str(self.dia) == str(self.dias[4]):
            self.precoTicket -= 2.00

    def addTicket(self, age, isStudent):
        precoPadrao = 0.00
        if bool(isStudent):
            precoPadrao = 8.00
        else:
            precoPadrao = 11.00
        if age >= 65:
            precoPadrao = 6.00
        elif age <= 13:
            precoPadrao = 5.50
        self.pessoas +=1
        self.precoTotal += precoPadrao + self.precoTicket

    def finishPurchase(self,):
        if self.pessoas >= 20 and str(self.dia) == str(self.dias[4]):
            self.precoTotal += self.pessoas*2.00
        return self.precoTotal

class MovieTestCase(unittest.TestCase):

    def test_movie1(self):
        compra = Cinema()
        compra.startPurchase(130,'TER', False, True)
        compra.addTicket(14,True)
        compra.addTicket(30,False)
        assert compra.finishPurchase() == 32.00

if __name__ == '__main__':
    unittest.main()