{"id":1043394,"date":"2024-12-31T13:05:44","date_gmt":"2024-12-31T05:05:44","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/1043394.html"},"modified":"2024-12-31T13:05:46","modified_gmt":"2024-12-31T05:05:46","slug":"python%e5%a6%82%e4%bd%95%e8%ae%a9%e5%ae%9a%e6%97%b6%e5%99%a8%e6%8c%81%e7%bb%ad%e8%bf%90%e8%a1%8c","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/1043394.html","title":{"rendered":"python\u5982\u4f55\u8ba9\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c"},"content":{"rendered":"

\"python\u5982\u4f55\u8ba9\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\"<\/p>\n

Python\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\u7684\u65b9\u6cd5\u6709\u591a\u79cd\uff1a\u4f7f\u7528 threading.Timer\u3001sched \u6a21\u5757\u3001while \u5faa\u73af\u7b49\u3002\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u8fd9\u51e0\u79cd\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5b9e\u4f8b\u4ee3\u7801\u3002<\/strong>\u672c\u6587\u5c06\u8be6\u7ec6\u4ecb\u7ecd\u5982\u4f55\u5728Python\u4e2d\u4f7f\u7528\u8fd9\u4e9b\u65b9\u6cd5\uff0c\u4f7f\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\u3002\u4e3b\u8981\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528threading.Timer\u3001\u4f7f\u7528sched\u6a21\u5757\u3001\u4ee5\u53ca\u4f7f\u7528while\u5faa\u73af\u3002\u6211\u4eec\u5c06\u9010\u4e00\u8bb2\u89e3\u6bcf\u79cd\u65b9\u6cd5\uff0c\u5e76\u63d0\u4f9b\u5bf9\u5e94\u7684\u793a\u4f8b\u4ee3\u7801\u3002<\/p>\n<\/p>\n

\u4e00\u3001\u4f7f\u7528 threading.Timer \u6301\u7eed\u8fd0\u884c\u5b9a\u65f6\u5668<\/p>\n<\/p>\n

Threading.Timer \u662f Python \u6807\u51c6\u5e93 threading \u6a21\u5757\u7684\u4e00\u90e8\u5206\u3002\u5b83\u5141\u8bb8\u5728\u6307\u5b9a\u7684\u65f6\u95f4\u540e\u6267\u884c\u4e00\u4e2a\u51fd\u6570\u3002\u8981\u4f7f\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\uff0c\u6211\u4eec\u53ef\u4ee5\u5728\u5b9a\u65f6\u5668\u51fd\u6570\u5185\u90e8\u518d\u6b21\u8bbe\u7f6e\u4e00\u4e2a\u5b9a\u65f6\u5668\u3002<\/p>\n<\/p>\n

\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n

import threading<\/p>\n
def print_message():<\/p>\n
    print("This is a repeated message.")<\/p>\n
    # \u518d\u6b21\u8bbe\u7f6e\u5b9a\u65f6\u5668<\/p>\n
    threading.Timer(5, print_message).start()<\/p>\n
\u9996\u6b21\u542f\u52a8\u5b9a\u65f6\u5668<\/strong><\/h2>\n
threading.Timer(5, print_message).start()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u4e0a\u9762\u7684\u4ee3\u7801\u4e2d\uff0cprint_message<\/code> \u51fd\u6570\u5c06\u5728\u6bcf\u6b21\u8c03\u7528\u65f6\u518d\u6b21\u8bbe\u7f6e\u4e00\u4e2a\u65b0\u7684\u5b9a\u65f6\u5668\uff0c\u4f7f\u5176\u6bcf\u96945\u79d2\u949f\u91cd\u590d\u6267\u884c\u3002<\/p>\n<\/p>\n
\u4e8c\u3001\u4f7f\u7528 sched \u6a21\u5757<\/p>\n<\/p>\n
Sched \u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u7075\u6d3b\u7684\u65b9\u6cd5\u6765\u8ba1\u5212\u4efb\u52a1\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 sched.scheduler \u7c7b\u6765\u521b\u5efa\u4e00\u4e2a\u8c03\u5ea6\u5668\uff0c\u5e76\u4f7f\u7528 enter \u65b9\u6cd5\u6765\u5b89\u6392\u4efb\u52a1\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n
import sched<\/p>\n
import time<\/p>\n
scheduler = sched.scheduler(time.time, time.sleep)<\/p>\n
def print_message(sc):<\/p>\n
    print("This is a repeated message.")<\/p>\n
    # \u518d\u6b21\u8bbe\u7f6e\u4efb\u52a1<\/p>\n
    scheduler.enter(5, 1, print_message, (sc,))<\/p>\n
\u9996\u6b21\u8bbe\u7f6e\u4efb\u52a1<\/strong><\/h2>\n
scheduler.enter(5, 1, print_message, (scheduler,))<\/p>\n
scheduler.run()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u8c03\u5ea6\u5668\uff0c\u5e76\u4f7f\u7528 scheduler.enter<\/code> \u65b9\u6cd5\u5b89\u6392\u4efb\u52a1\uff0c\u4f7f\u5176\u6bcf\u96945\u79d2\u949f\u91cd\u590d\u6267\u884c\u3002<\/p>\n<\/p>\n
\u4e09\u3001\u4f7f\u7528 while \u5faa\u73af<\/p>\n<\/p>\n
\u4f7f\u7528 while \u5faa\u73af\u548c time.sleep \u65b9\u6cd5\u4e5f\u662f\u4e00\u79cd\u5b9e\u73b0\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\u7684\u7b80\u5355\u65b9\u6cd5\u3002\u867d\u7136\u8fd9\u79cd\u65b9\u6cd5\u6bd4\u8f83\u76f4\u63a5\uff0c\u4f46\u5728\u67d0\u4e9b\u60c5\u51b5\u4e0b\u53ef\u80fd\u66f4\u9002\u5408\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n
import time<\/p>\n
def print_message():<\/p>\n
    print("This is a repeated message.")<\/p>\n
while True:<\/p>\n
    print_message()<\/p>\n
    time.sleep(5)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cprint_message<\/code> \u51fd\u6570\u5c06\u6bcf\u96945\u79d2\u949f\u88ab\u8c03\u7528\u4e00\u6b21\uff0c\u76f4\u5230\u7a0b\u5e8f\u88ab\u7ec8\u6b62\u3002<\/p>\n<\/p>\n
\u56db\u3001\u4f7f\u7528 asyncio \u6a21\u5757<\/p>\n<\/p>\n
\u5bf9\u4e8e\u5f02\u6b65\u7f16\u7a0b\uff0casyncio \u6a21\u5757\u63d0\u4f9b\u4e86\u4e00\u79cd\u4f18\u96c5\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u5b9a\u65f6\u5668\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528 asyncio.sleep<\/code> \u65b9\u6cd5\u6765\u521b\u5efa\u4e00\u4e2a\u5f02\u6b65\u5b9a\u65f6\u5668\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n
import asyncio<\/p>\n
async def print_message():<\/p>\n
    while True:<\/p>\n
        print("This is a repeated message.")<\/p>\n
        awAI<\/a>t asyncio.sleep(5)<\/p>\n
\u521b\u5efa\u5e76\u8fd0\u884c\u4e8b\u4ef6\u5faa\u73af<\/strong><\/h2>\n
loop = asyncio.get_event_loop()<\/p>\n
loop.run_until_complete(print_message())<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0cprint_message<\/code> \u662f\u4e00\u4e2a\u5f02\u6b65\u51fd\u6570\uff0c\u5b83\u6bcf\u96945\u79d2\u949f\u8f93\u51fa\u4e00\u6b21\u6d88\u606f\u3002<\/p>\n<\/p>\n
\u4e94\u3001\u4f7f\u7528 APScheduler \u6a21\u5757<\/p>\n<\/p>\n
APScheduler \u662f\u4e00\u4e2a\u9ad8\u7ea7\u7684\u8c03\u5ea6\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u529f\u80fd\u6765\u8ba1\u5212\u4efb\u52a1\u3002\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u5b83\u6765\u521b\u5efa\u6301\u7eed\u8fd0\u884c\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n
from apscheduler.schedulers.background import BackgroundScheduler<\/p>\n
def print_message():<\/p>\n
    print("This is a repeated message.")<\/p>\n
scheduler = BackgroundScheduler()<\/p>\n
scheduler.add_job(print_message, 'interval', seconds=5)<\/p>\n
scheduler.start()<\/p>\n
\u8ba9\u4e3b\u7ebf\u7a0b\u4fdd\u6301\u8fd0\u884c<\/strong><\/h2>\n
try:<\/p>\n
    while True:<\/p>\n
        time.sleep(2)<\/p>\n
except (KeyboardInterrupt, SystemExit):<\/p>\n
    scheduler.shutdown()<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u4f7f\u7528 APScheduler \u521b\u5efa\u4e86\u4e00\u4e2a\u540e\u53f0\u8c03\u5ea6\u5668\uff0c\u5e76\u5b89\u6392\u4efb\u52a1\u6bcf\u96945\u79d2\u949f\u6267\u884c\u4e00\u6b21\u3002<\/p>\n<\/p>\n
\u516d\u3001\u4f7f\u7528 Timer \u7684\u9012\u5f52\u65b9\u6cd5<\/p>\n<\/p>\n
\u6211\u4eec\u8fd8\u53ef\u4ee5\u901a\u8fc7\u9012\u5f52\u8c03\u7528\u5b9a\u65f6\u5668\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u6301\u7eed\u8fd0\u884c\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n<\/p>\n
\u793a\u4f8b\u4ee3\u7801<\/h3>\n<\/p>\n
import threading<\/p>\n
class RepeatedTimer(threading.Timer):<\/p>\n
    def __init__(self, interval, function, *args, kwargs):<\/p>\n
        threading.Timer.__init__(self, interval, function, *args, kwargs)<\/p>\n
        self.interval = interval<\/p>\n
        self.function = function<\/p>\n
        self.args = args<\/p>\n
        self.kwargs = kwargs<\/p>\n
        self.start()<\/p>\n
    def run(self):<\/p>\n
        while True:<\/p>\n
            self.finished.wait(self.interval)<\/p>\n
            if self.finished.is_set():<\/p>\n
                break<\/p>\n
            self.function(*self.args, self.kwargs)<\/p>\n
def print_message():<\/p>\n
    print("This is a repeated message.")<\/p>\n
\u4f7f\u7528 RepeatedTimer<\/strong><\/h2>\n
repeated_timer = RepeatedTimer(5, print_message)<\/p>\n
<\/code><\/pre>\n<\/p>\n
\u5728\u8fd9\u4e2a\u4f8b\u5b50\u4e2d\uff0c\u6211\u4eec\u521b\u5efa\u4e86\u4e00\u4e2a\u81ea\u5b9a\u4e49\u7684 RepeatedTimer \u7c7b\uff0c\u901a\u8fc7\u91cd\u5199\u5176 run<\/code> \u65b9\u6cd5\u5b9e\u73b0\u4e86\u5b9a\u65f6\u5668\u7684\u6301\u7eed\u8fd0\u884c\u3002<\/p>\n<\/p>\n
\u4e03\u3001\u9009\u62e9\u5408\u9002\u7684\u65b9\u6cd5<\/p>\n<\/p>\n
\u9009\u62e9\u54ea\u79cd\u65b9\u6cd5\u53d6\u51b3\u4e8e\u5177\u4f53\u9700\u6c42\u548c\u5e94\u7528\u573a\u666f\uff1a<\/p>\n<\/p>\n
    \n
  • threading.Timer<\/strong>: \u9002\u7528\u4e8e\u7b80\u5355\u7684\u591a\u7ebf\u7a0b\u4efb\u52a1\u3002<\/li>\n
  • sched \u6a21\u5757<\/strong>: \u63d0\u4f9b\u4e86\u66f4\u7075\u6d3b\u7684\u4efb\u52a1\u8c03\u5ea6\u3002<\/li>\n
  • while \u5faa\u73af<\/strong>: \u9002\u7528\u4e8e\u7b80\u5355\u7684\u540c\u6b65\u4efb\u52a1\u3002<\/li>\n
  • asyncio<\/strong>: \u9002\u7528\u4e8e\u5f02\u6b65\u7f16\u7a0b\u3002<\/li>\n
  • APScheduler<\/strong>: \u63d0\u4f9b\u4e86\u4e30\u5bcc\u7684\u8c03\u5ea6\u529f\u80fd\uff0c\u9002\u7528\u4e8e\u590d\u6742\u7684\u4efb\u52a1\u8c03\u5ea6\u3002<\/li>\n<\/ul>\n
    \u603b\u7ed3<\/p>\n<\/p>\n
    \u672c\u6587\u4ecb\u7ecd\u4e86\u591a\u79cd\u5728Python\u4e2d\u5b9e\u73b0\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\u7684\u65b9\u6cd5\uff0c\u5305\u62ec\u4f7f\u7528 threading.Timer\u3001sched \u6a21\u5757\u3001while \u5faa\u73af\u3001asyncio \u6a21\u5757\u548c APScheduler \u6a21\u5757\u3002\u6bcf\u79cd\u65b9\u6cd5\u90fd\u6709\u5176\u72ec\u7279\u7684\u4f18\u52bf\u548c\u9002\u7528\u573a\u666f\u3002\u901a\u8fc7\u8fd9\u4e9b\u793a\u4f8b\u4ee3\u7801\uff0c\u60a8\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\u9009\u62e9\u6700\u5408\u9002\u7684\u65b9\u6cd5\u6765\u5b9e\u73b0\u5b9a\u65f6\u5668\u7684\u6301\u7eed\u8fd0\u884c\u3002<\/p>\n<\/p>\n
    \u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n
     \u5982\u4f55\u5728Python\u4e2d\u521b\u5efa\u4e00\u4e2a\u6301\u7eed\u8fd0\u884c\u7684\u5b9a\u65f6\u5668\uff1f<\/strong>
    \u5728Python\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528threading<\/code>\u6a21\u5757\u4e2d\u7684Timer<\/code>\u7c7b\u6765\u521b\u5efa\u4e00\u4e2a\u5b9a\u65f6\u5668\u3002\u4e3a\u4e86\u8ba9\u5b9a\u65f6\u5668\u6301\u7eed\u8fd0\u884c\uff0c\u53ef\u4ee5\u5728\u5b9a\u65f6\u5668\u7684\u56de\u8c03\u51fd\u6570\u4e2d\u91cd\u65b0\u542f\u52a8\u53e6\u4e00\u4e2a\u5b9a\u65f6\u5668\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u521b\u5efa\u4e00\u4e2a\u51fd\u6570\u6765\u6267\u884c\u7279\u5b9a\u7684\u4efb\u52a1\uff0c\u5e76\u5728\u8be5\u51fd\u6570\u7684\u672b\u5c3e\u518d\u542f\u52a8\u4e00\u4e2a\u65b0\u7684\u5b9a\u65f6\u5668\u3002<\/p>\n
    Python\u4e2d\u6709\u54ea\u4e9b\u65b9\u6cd5\u53ef\u4ee5\u5b9e\u73b0\u5b9a\u65f6\u4efb\u52a1\uff1f<\/strong>
    \u9664\u4e86\u4f7f\u7528threading.Timer<\/code>\u5916\uff0cPython\u8fd8\u53ef\u4ee5\u5229\u7528schedule<\/code>\u5e93\u6216APScheduler<\/code>\u5e93\u6765\u5b9e\u73b0\u5b9a\u65f6\u4efb\u52a1\u3002schedule<\/code>\u5e93\u63d0\u4f9b\u4e86\u4e00\u4e2a\u7b80\u5355\u7684API\u6765\u5b9a\u4e49\u4efb\u52a1\u548c\u65f6\u95f4\u95f4\u9694\uff0c\u800cAPScheduler<\/code>\u5219\u9002\u5408\u66f4\u590d\u6742\u7684\u8c03\u5ea6\u9700\u6c42\uff0c\u5982\u5b9a\u671f\u6267\u884c\u4efb\u52a1\u6216\u5728\u7279\u5b9a\u65f6\u95f4\u8fd0\u884c\u3002<\/p>\n
    \u5982\u4f55\u5904\u7406\u5b9a\u65f6\u5668\u5728\u8fd0\u884c\u65f6\u53ef\u80fd\u51fa\u73b0\u7684\u9519\u8bef\uff1f<\/strong>
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