kivy clock implementation

code.py

class Quiz_Game(Screen):
    def on_enter(self, *args):
        # user's option selection choice
        self.users_selected_opt = []

        # game increment questions
        self.number_of_question_list = []

        # currently unused
        self.answers = []

        # question index
        self.qnr = 0

        # timer
        self.timer_countdown = 10

        # game score
        self.total_wrong_answer = 0
        self.total_right_answer = 0

        with open("qus_set.json") as r:
            self.question = json.load(r)

        # appending question number of question to a list
        for i in self.question:
            self.number_of_question_list.append(i)

        # starting game on screen opening
        self.next()

    # next question button for changing question for user
    def next(self):
        # game score
        self.game_score()

        # starting timer
        self.timer_count()

        # checking if number question in list and preventing crash
        if len(self.number_of_question_list) > self.qnr:

            # question increment
            self.qnr += 1
            # getting question overview from json through list index
            ii = self.number_of_question_list[self.qnr - 1]

            # showing question number to gui game
            self.ids.qn.text = f"Q{self.qnr}"

            # showing questions and options on screen
            self.ids.questions.text = self.question.get(ii)["question"]
            self.ids.q1.text = self.question.get(ii)["options"]["1"]
            self.ids.q2.text = self.question.get(ii)["options"]["2"]
            self.ids.q3.text = self.question.get(ii)["options"]["3"]
            self.ids.q4.text = self.question.get(ii)["options"]["4"]

            # after changing to next question making selected button back to normal
            self.ids.q1.state = "normal"
            self.ids.q2.state = "normal"
            self.ids.q3.state = "normal"
            self.ids.q4.state = "normal"
            self.ids.q1.background_color = "#A2FFD1"
            self.ids.q2.background_color = "#A2FFD1"
            self.ids.q3.background_color = "#A2FFD1"
            self.ids.q4.background_color = "#A2FFD1"

            # decrement question
            self.prev_ = self.qnr

    def display_answers(self, qn, *args):
        list_index = int(qn[1:])
        ans = self.question.get(qn.lower())["answer"]
        # print(ans)
        usr_ans = self.users_selected_opt[-1][qn]["opt"]
        usr_ans_state = self.users_selected_opt[-1][qn]["state"]
        # print(usr_ans)

        match usr_ans[0]:
            case "opt1":
                if usr_ans_state:
                    if ans == usr_ans[1]:
                        self.ids.q1.background_color = "green"
                        self.total_right_answer += 1
                    else:
                        self.ids.q1.background_color = "red"
                        self.total_wrong_answer += 1

            case "opt2":
                if usr_ans_state:
                    if ans == usr_ans[1]:
                        self.ids.q2.background_color = "green"
                        self.total_right_answer += 1
                    else:
                        self.ids.q2.background_color = "red"
                        self.total_wrong_answer += 1
            case "opt3":
                if usr_ans_state:
                    if ans == usr_ans[1]:
                        self.ids.q3.background_color = "green"
                        self.total_right_answer += 1
                    else:
                        self.ids.q3.background_color = "red"
                        self.total_wrong_answer += 1
            case "opt4":
                if usr_ans_state:
                    if ans == usr_ans[1]:
                        self.ids.q4.background_color = "green"
                        self.total_right_answer += 1
                    else:
                        self.ids.q4.background_color = "red"
                        self.total_wrong_answer += 1

    # previous button
    def prev(self):
        self.prev_ -= 1
        # print(self.prev_, "testing")
        if self.prev_ >= 0:
            ii = self.number_of_question_list[self.prev_]
            self.ids.qn.text = f"Q{self.prev_}"
            self.ids.questions.text = self.question.get(ii)["question"]
            self.ids.q1.text = self.question.get(ii)["options"]["1"]
            self.ids.q2.text = self.question.get(ii)["options"]["2"]
            self.ids.q3.text = self.question.get(ii)["options"]["3"]
            self.ids.q4.text = self.question.get(ii)["options"]["4"]

            # making question state back to normal
            self.ids.q1.state = "normal"
            self.ids.q2.state = "normal"
            self.ids.q3.state = "normal"
            self.ids.q4.state = "normal"
            self.ids.q1.background_color = "#A2FFD1"
            self.ids.q2.background_color = "#A2FFD1"
            self.ids.q3.background_color = "#A2FFD1"
            self.ids.q4.background_color = "#A2FFD1"

    # showing questions red or green
    def selected_que(self, qn, ans_dict, value):
        # checking only this function work on next question not on previous
        if self.qnr == int(qn[1:]):
            self.users_selected_opt.append(ans_dict)
            Clock.schedule_once(partial(self.display_answers, qn), .6)
            # print(ans_dict)

    # game timer
    def timer_count(self):
        self.looper = Clock.schedule_interval(self.timer_logic, 1)

    def timer_logic(self, *args):
        self.timer_countdown -= 1
        if self.timer_countdown > -1:
            mins, secs = divmod(self.timer_countdown, 60)
            timers = '{:02d}:{:02d}'.format(mins, secs)
            self.ids.timer.text = timers
            # print(f"hii, {self.timer_countdown}")
            if self.timer_countdown < 5:
                self.anim = Animation(color=(0, 0, 0, 0), duration=0.1) + Animation(color=(0, 0, 0, 0), duration=.1)
                self.anim += Animation(color=(1, 0, 0, 1), duration=0.1) + Animation(color=(1, 0, 0, 1), duration=.1)
                self.anim.repeat = False
                self.anim.start(self.ids.timer)
            elif self.timer_countdown == 0:
                self.anim.stop(self.ids.timer)

        else:
            self.looper.cancel()
            self.timer_countdown = 10
            print("time up!")

    def timer_stop_start(self):
        self.looper.cancel()

    def game_score(self):
        self.ids.correct_ans.text = f"Your Correct Answer\n {self.total_right_answer}"
        self.ids.wrong_ans.text = f"Your Wrong Answer\n {self.total_wrong_answer}"
        self.ids.total_score.text = f"Your Total Score\n {self.total_right_answer - self.total_wrong_answer}"