Python : 在调用 send_hook 相同项目的 Discord 之前等待一段时间

Question

我的程序通过 URL 检查许多商品，并在商品有货时调用 send_hook。我希望我的程序在再次为同一项目调用 send_hook 之前等待一段时间。然而，它应该继续检查其他 URL。 .. 这可能吗？

这是我的程序：

from bs4 import BeautifulSoup
from discord import send_hook
from datetime import datetime

pid = ['PB00393363','PB00430691','PB00430699']

headers = {
    'user-agent' : 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/90.0.4430.85 Safari/537.36'
}

while True:
    for i in range(len(pid)):
    
    url = "https://www.ldlc.com/fr-be/fiche/{}.html".format(pid[i])

    response = requests.get(url, headers=headers)     
    soup = BeautifulSoup(response.text, 'html.parser')
    soup = BeautifulSoup(requests.get(url).content, 'html.parser')
    stock_statut = soup.find('div', class_='content').get_text().strip()            
    product_title = soup.find('h1').get_text().strip()
    
    price = soup.find_all('div', class_='price')[3].get_text()
    

    try:

        image_url = soup.find('img', {'id':'ctl00_cphMainContent_ImgProduct'})['src']
    
    except:
       
        image_url = soup.find('img', {'id':'ctl00_cphMainContent_ImgProduct'})['src']
        
    if stock_statut == 'En stock':
        print('[{}] En stock'.format(str(datetime.now())))
        
        send_hook(product_title, url, image_url, price)

    else:
        print('[{}] Rupture'.format(str(datetime.now())))

如果你能帮助我，我会很高兴。谢谢！

Answer 1

您将需要使用 python 时间模块。

我只是复制了整个代码并添加了一些行来帮助你。

from bs4 import BeautifulSoup
from discord import send_hook
from datetime import datetime
import time

# Declare a wait time in seconds
wait_time = 30

pid = ['PB00393363','PB00430691','PB00430699']
# Use a dictionary associate each item with the time of the last find
# Init with 0 meaning long in the past
timed_pid = {p: 0 for p in pid}  

...

while True:
    # Wait some time. Multiple requests per second could be considered a DOS attack
    time.sleep(5)
    # do not iterate over the length
    #for i in range(len(pid)):
    # iterate the keys of the dict
    for p in timed_pid:
        # check the time passed since the last find
        if (time.time() - timed_pid[p]) < wait_time:
            # wait time has not passed: skip
            continue
    
        # use p directly for formating
        url = "https://www.ldlc.com/fr-be/fiche/{}.html".format(p)

        ...
        
        if stock_statut == 'En stock':
            print('[{}] En stock'.format(str(datetime.now())))
            # set the time of the current find
            timed_pid[p] = time.time()
            send_hook(product_title, url, image_url, price)

        else:
            print('[{}] Rupture'.format(str(datetime.now())))

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