Python中的Timer只运行x秒然后停止 [英] Timer in Python runs only for x seconds and then stops

问题描述

我每隔X秒获取天气信息，但似乎在三个线程执行完毕后，Timer才停止。问题是这是两天前工作的，我不确定是否有任何修改，因为我看不出有什么显着差异。

I am getting the information for weather every X seconds but it seems that after the three threads have executed the Timer just stops. The problem is that this was working two days ago and I am not sure if anything has been modified as I can't see a significant difference.

import requests
import json
import threading
import time
from threading import Thread
import _sqlite3


def main():
    threading.Timer(10, giveVelingrad).start()
    threading.Timer(15, giveSofia).start()
    threading.Timer(25, givePlovdiv).start()

   

def giveVelingrad():
    city = "Velingrad"
    response = requests.get("http://api.openweathermap.org/data/2.5/weather?q=" +city+ "&appid=2e8707d1eb97fbbba33ef766d9ed80ac&units=metric")
    weather = response.json()
    www = time.strftime("%d.%m.%y %H.%M.%S")
    print("\n",www)
    print("The weather for ", weather['name'])
    print("The temperature is ", weather['main']['temp'])

def giveSofia():
    city = "Sofia"
    response = requests.get("http://api.openweathermap.org/data/2.5/weather?q=" +city+ "&appid=2e8707d1eb97fbbba33ef766d9ed80ac&units=metric")
    weather = response.json()
    www = time.strftime("%d.%m.%y %H.%M.%S")
    print("\n",www)
    print("The weather for ", weather['name'])
    print("The temperature is ", weather['main']['temp'])

def givePlovdiv():
    city = "Plovdiv"
    response = requests.get("http://api.openweathermap.org/data/2.5/weather?q=" +city+ "&appid=2e8707d1eb97fbbba33ef766d9ed80ac&units=metric")
    weather = response.json()
    www = time.strftime("%d.%m.%y %H.%M.%S")
    print("\n",www)
    print("The weather for ", weather['name'])
    print("The temperature is ", weather['main']['temp'])
    

if __name__ == '__main__':
    main()

我尝试了什么：



请帮忙，因为我似乎无法理解什么是问题

What I have tried:

Please help as I can't seem to understand what's the problem

推荐答案

你的给定函数只会运行一次，参见 17.1。线程化 - 基于线程的并行性 - Python 3.5.2文档 [ ^ ]。

Your give functions will only run once, see 17.1. threading — Thread-based parallelism — Python 3.5.2 documentation[^].

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