Selenium 數據使用 discord.py 進入 discord

Question

我制作了一個跟蹤目標價格的機器人。com，我希望價格從 go 到 discord 這是原始代碼

import time
from selenium.common.exceptions import *

OOS = '//*[@id="notifyMe"]'
in_stock = '//*[@id="viewport"]/div[5]/div/div[2]/div[3]/div[1]/div/div[3]/div[1]/div[2]/button'

while True:
    web = webdriver.Chrome()

    web.get('https://www.target.com/p/minecraft-bee-pillow-buddy/-/A-79337175')
    time.sleep(1)

    try:
        instock_button = web.find_element_by_xpath(in_stock).click()
        print("INSTOCK")
    except NoSuchElementException:
        print("OOS")
    web.quit()

這是我試圖在 discord 中鏈接的內容

import time
from discord.ext import *
from discord.ext import commands
from discord.ext import tasks
from discord.ext.commands import Bot
from discord_webhooks import DiscordWebhooks
from selenium import webdriver
from selenium.common.exceptions import *

in_stock = '//*[@id="viewport"]/div[5]/div/div[2]/div[3]/div[1]/div/div[3]/div[1]/div[2]/button'
bot = commands.Bot(command_prefix='!')
while True:
    @bot.command()
    async def weird(ctx):
        channel = client.get_channel(784163508299890738)
        web = webdriver.Chrome()
        web.get('https://www.target.com/p/madden-nfl-20-playstation-4/-/A-54600234')
        time.sleep(1)
        try:
            price = web.find_elements_by_xpath('//*[@id="viewport"]/div[5]/div/div[2]/div[2]/div[1]/div[1]/div[1]')
            for post in price:
                cost = (post.text)

            instock_button = web.find_element_by_xpath(in_stock).click()
            james = ("INSTOCK" + "   PRICE:" + cost)
        except NoSuchElementException:
            marcus = ("OOS" + "   PRICE:" + cost)
        web.quit()
        await channel.send(james)

        client.run("TOKEN")

然而，當我運行這段代碼時，我得到了一個錯誤

raise CommandRegistrationError(command.name)
discord.ext.commands.errors.CommandRegistrationError: 
  The command weird is already an existing command or alias.

我該如何解決這個問題，請幫助！！！！！！！

Answer 1

您不能使用while True因為您一次又一次地創建相同的命令。 除了discord必須使用bot.run()啟動自己的循環，同時運行兩個循環會產生問題。

幸運的是 discord 有task.loop(seconds=...)定期運行一些代碼，所以它可以代替while True工作。 它只需要啟動它。

我嘗試使用on_ready啟動它，但它在我的 Linux 上不起作用，所以我不得不使用命令手動啟動它 - 但后來它一直運行

為了讓它更快，我只啟動Chrome一次，並在停止機器人后關閉它。

import os
import time

from discord.ext import commands
from discord.ext import tasks
from discord.ext.commands import Bot

from selenium import webdriver
from selenium.common.exceptions import *

in_stock_xpath = '//*[@id="viewport"]/div[5]/div/div[2]/div[3]/div[1]/div/div[3]/div[1]/div[2]/button'
price_xpath = '//*[@id="viewport"]/div[5]/div/div[2]/div[2]/div[1]/div[1]/div[1]'

bot = commands.Bot(command_prefix='!')

#help(tasks.loop)

@tasks.loop(seconds=30)
async def weird():
    print('[weird] start weird')
    channel = bot.get_channel(784163508299890738)  # `bot`, not `client`

    web.get('https://www.target.com/p/madden-nfl-20-playstation-4/-/A-54600234')
    time.sleep(5)

    try:
        price = web.find_elements_by_xpath(price_xpath)
        for post in price:
            cost = post.text

        instock_button = web.find_element_by_xpath(in_stock_xpath).click()
        message = "INSTOCK   PRICE: " + cost
    except NoSuchElementException:
        cost = '???'
        message = "OOS   PRICE: " + cost

    await channel.send(message)

@bot.event
async def on_ready():   # this doesn't start on my computer
    print('[on_ready] start weird')
    weird.start()

@bot.command()
async def start(ctx):  # I start it manually with command `!start`
    print('[start] start weird')
    weird.start()   

# --- main ---

print('start chrome')
web = webdriver.Chrome()  # create only once

print('start bot')
TOKEN = os.getenv('DISCORD_TOKEN')
bot.run(TOKEN)  # `bot`, not `client`
print('stop bot')

web.quit()  # close only once
print('stop chrome')