#! /usr/bin/env python3

import random


class my_rechner:
    def __init__(self, zahl=0):
        self.zahl = zahl
        self.rechen_art = ['*', '+', '-']
        self.art = random.choice(self.rechen_art)


    def check_input(self):
        pass

    def rechnen(self):
        pass

    def check_rechnen(self):
        self.zahl = random.randint(1, 1000)
        self.art = random.choice(self.rechen_art)
        
    def main_run(self):

        while True:
            print(self.zahl , self.art)
            r = str(str(self.zahl) + ' ' + str(self.art) + ' '+ str(self.zahl))
            summe = eval(r)
            self.check_rechnen()
            print(r)
            print(summe)
    
            check_input = input("Noch eine Frage ? :")
            if len(check_input) == 1 and check_input == "n":
                break
            else:
                print("false") 


if __name__ == "__main__":
    print("Running Main",  "." *3)
    rechnen_now = my_rechner()
    rechnen_now.main_run()