我怎樣才能同時運行一個計時器和另一個函數，對計時器返回的時間做出反應？ [Python]

Question

我有一個計時器，返回（至少我希望它）一些價值。 我有一個函數，在定時器類之外，它應該查看定時器的返回值，如果該函數接收到特定數據 - 只在特定時刻執行其他操作。

from time import time, sleep

class Clock:
    def __init__(self):
        self.oneSec = 0
        self.secsPassed = 0 #counts all seconds that already passed, up to 59; then resets and counts again
        self.minute = 0
        self.hour = 0 #currently unused
        self.day = 0 #currently unused
        self.start_time = 0

        self.start()

    def start(self):
        while self.secsPassed < 10:
            self.start_time = time()
            sleep(1)
            self.oneSec = int(time() - self.start_time) #easiest way to measure a second
            self.secsPassed += self.oneSec
            print(f"{self.minute} minutes, {self.secsPassed} seconds")
            self.getStats() #returns values without breaking the loop, at least I hope it does 

            if self.secsPassed == 10: #normally it'd be 59, but I wanted to do it quicker for sake of tests
                self.secsPassed = -1 #with 0 after 1:59 minute there would be immediately 2:01
                self.minute += 1

            if self.minute == 2 and self.secsPassed == 0: #just to end test if everything works fine
                break #for some reason it doesn't totally exit whole code, only stops counting, but I still have to manually exit the code from running


    def getStats(self):
        return self.day, self.hour, self.minute, self.secsPassed

現在我需要一個函數，在 Clock 類之外，它可以觀察我的 Clock 的返回語句如何變化並相應地對它們做出反應。 我已經完成了一些編碼，但它無法工作，我可能知道為什么，但我無法在 3 小時內想出一個解決方案。 這是我當前的代碼：

def clockChecker(clock):
    while True: #I thought it'd be a good idea to loop since it has to be "conscious" the whole time to react on new returns, but... I guess this cannot work, after a few hours I realized that by running this function it gets the returned statement only once, so it can't update
        if clock == (0, 0, 0, 3): #if clocks makes 3rd second
            print("It works!")
            break

我嘗試使用線程、管道和池，但如果我的 clockChecker 無效，則沒有任何幫助。 首先，我肯定需要我的clockChecker 的幫助，其次我很感激至少在選擇我應該使用哪個（線程、管道、池）方面的幫助，所以它工作得非常順利。

Answer 1

你會發現你的方法有一些困難。

第一個只是clockChecker函數，我相信您缺少.getStats()調用來使其工作，它沒有成功的機會。

即使進行了這種更改（應該起作用），精確匹配也非常危險，並且會遭受“在正確的時間不匹配”和“可能永遠不會匹配”的困擾。

解決此問題的一種方法是使用>=或其他匹配特定時刻以上的條件。 其他包括： threading.Event ； 將條件推入計時器的鈎子； 按原樣執行您的邏輯，睡眠三秒鍾； 協程，以及更多:)

Answer 2

如果你不介意換另一條路線

def outside_func():
    do something
    return

class clock():
    def __init__(self, arguments):
        self.secspassed
    def timer():
        while True:
            self.secspasswd += 1
            if self.secspasswd % 3 == 0:
                outside_func()
            time.sleep(1)   

我認為使用 +1 秒來設置時間值會增加偏差。 編程+1需要一些時間，設置屬性值也需要一些時間。 當您 +1 時，實時時間已超過 1 秒，

Answer 3

打印格式被修改，因為我使用的是python 3.5

from time import time, sleep
import threading 

class Clock:
    def __init__(self):
        self.oneSec = 0
        self.secsPassed = 0 #counts all seconds that already passed, up to 59; then resets and counts again
        self.minute = 0
        self.hour = 0 #currently unused
        self.day = 0 #currently unused
        self.start_time = 0

        #self.start()

    def start(self):
        while self.secsPassed < 10:
            self.start_time = time()
            sleep(1)
            self.oneSec = int(time() - self.start_time) #easiest way to measure a second
            self.secsPassed += self.oneSec
            print("%d minutes, %d seconds"%(self.minute,self.secsPassed,))
            # self.getStats() #returns values without breaking the loop, at least I hope it does 

            if self.secsPassed == 10: #normally it'd be 59, but I wanted to do it quicker for sake of tests
                self.secsPassed = -1 #with 0 after 1:59 minute there would be immediately 2:01
                self.minute += 1

            if self.minute == 2 and self.secsPassed == 0: #just to end test if everything works fine
                break #for some reason it doesn't totally exit whole code, only stops counting, but I still have to manually exit the code from running


    def getStats(self):
        return self.day, self.hour, self.minute, self.secsPassed



def clockChecker(clock):
    while True: #I thought it'd be a good idea to loop since it has to be "conscious" the whole time to react on new returns, but... I guess this cannot work, after a few hours I realized that by running this function it gets the returned statement only once, so it can't update
        if clock.getStats() == (0, 0, 0, 3): #if clocks makes 3rd second
            print("It works!")
            break
        sleep(1)
clock=Clock()

th1=threading.Thread(target=lambda: clock.start())
th1.start()

th2=threading.Thread(target=clockChecker,args=(clock,))
th2.start()

th2.join()
th1.join()