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retr 12
Asked:2022-07-10 22:43:28 +0000 UTC2022-07-10 22:43:28 +0000 UTC

Python 停止函数

  • 772

如何用另一个非嵌套函数停止一个函数？我试图用return来停止这个函数，但它没有出来。vopr2var1btnfunc 函数通过按钮调用。我想用 vopr2var1btnfunc 停止 update_time1



def vopr1var1btnfunc():
    variant1btn.pack_forget()
    vopr1var1lbl.pack()
    vopr1var1ent.pack()
    vopr1var1btn.pack()
    global currentvariant
    currentvariant = 'Задания для 5-6 классов'
    vopr1timerlbl.pack(anchor=CENTER)
    format1 = '%H:%M:%S'
    target1 = datetime.now() + timedelta(minutes=2)
    global update_time1
    def update_time1():
        now = datetime.now()
        if now < target1:
            remains = round((target1 - now).total_seconds())
            text = time(second=remains % 60, minute=remains // 60).strftime(format1)
            vopr1timerlbl.config(text=text)                    
            vopr1timerlbl.after(1000, update_time1)
        else:
            vopr2var1()
    update_time1()
    
    


def vopr2var1btnfunc():
    if update_time1():
        return
    global vopr1var1answer
    vopr1var1answer = vopr1var1ent.get()
    vopr1var1lbl.pack_forget()
    vopr1var1ent.pack_forget()
    vopr1var1btn.pack_forget()
    vopr1timerlbl.pack_forget()
    vopr2var1lbl.pack()
    vopr2var1ent.pack()
    vopr2var1btn.pack()
    vopr2timerlbl.pack(anchor=CENTER)
    format2 = '%H:%M:%S'
    target2 = datetime.now() + timedelta(minutes=2)
    global update_time2
    def update_time2():
        now = datetime.now()
        if now < target2:
            remains = round((target2 - now).total_seconds())
            text = time(second=remains % 60, minute=remains // 60).strftime(format2)
            vopr2timerlbl.config(text=text)
            vopr2timerlbl.after(1000, update_time2)
        else:
            vopr3var1()
    update_time2()
python функции

2 个回答

  1. 要停止一个函数，只需编写return

    def foo():
    if True:
        return
    print("Hi")!
foo()
    • 0
  2. Best Answer

    我通过创建一个附加变量解决了这个问题。按下按钮时，变量 a 增加到所需值并且功能停止。在每次声明变量 a 全局a = a + 1之后的完整代码中。

    def vopr1var1btnfunc():
    variant1btn.pack_forget()
    vopr1var1lbl.pack()
    vopr1var1ent.pack()
    vopr1var1btn.pack()
    global currentvariant
    currentvariant = 'Задания для 5-6 классов'
    vopr1timerlbl.pack(anchor=CENTER)
    format1 = '%H:%M:%S'
    target1 = datetime.now() + timedelta(minutes=2)
    global update_time1
    def update_time1():
        now = datetime.now()
        if a == 1: #на каждом вопросе переменная а возрастает на 1
            return
        if now < target1:
            remains = round((target1 - now).total_seconds())
            text = time(second=remains % 60, minute=remains // 60).strftime(format1)
            vopr1timerlbl.config(text=text)
            vopr1timerlbl.after(1000, update_time1)
        else:
            vopr2var1()        
    update_time1()
    
    


def vopr2var1btnfunc():
    global a #чтобы связать работу переменных а, я каждый раз объявлял глобальными
    a = 1
    global vopr1var1answer
    vopr1var1answer = vopr1var1ent.get()
    vopr1var1lbl.pack_forget()
    vopr1var1ent.pack_forget()
    vopr1var1btn.pack_forget()
    vopr1timerlbl.pack_forget()
    vopr2var1lbl.pack()
    vopr2var1ent.pack()
    vopr2var1btn.pack()
    vopr2timerlbl.pack(anchor=CENTER)
    format2 = '%H:%M:%S'
    target2 = datetime.now() + timedelta(minutes=2)
    global update_time2
    def update_time2():
        now = datetime.now()
        if a == 2:
            return
        if now < target2:
            remains = round((target2 - now).total_seconds())
            text = time(second=remains % 60, minute=remains // 60).strftime(format2)
            vopr2timerlbl.config(text=text)
            vopr2timerlbl.after(1000, update_time2)
        else:
            vopr3var1()
    update_time2()
    • 0

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