问题描述
我正在编写一个 discord-Bot,它发送一个包含从网站上抓取的信息的网络钩子。
抓取信息的函数如下:
import json
from requests_html import AsyncHTMLSession
import requests_html
import nest_asyncio
from bs4 import BeautifulSoup
class Product:
def __init__(self,url):
self._url = url
def get_sizes_prices(self):
nest_asyncio.apply()
asession = AsyncHTMLSession()
# create session from given endpoint with keywords/sku
async def get_url():
slug = asession.get('a special URL' + self._url)
result = asession.run(get_url())
result_slug = result.html
**Some more code down there which gets some special things from the scraped website**
return **variables**
在运行时,我收到错误:
Ignoring exception in on_message
Traceback (most recent call last):
File "C:\Users\lucab\PycharmProjects\untitled\venv\lib\site-packages\discord\client.py",line 333,in _run_event
await coro(*args,**kwargs)
File "C:/Users/lucab/OneDrive/Bots_-Coding/NexusTools/restocksscraper/main.py",line 15,in on_message
array = product_obj.get_sizes_prices()
File "C:\Users\lucab\OneDrive\Bots_-Coding\NexusTools\restocksscraper\get_product.py",line 21,in get_sizes_prices
results = asession.run(getlink())
File "C:\Users\lucab\PycharmProjects\untitled\venv\lib\site-packages\requests_html.py",line 772,in run
asyncio.ensure_future(coro()) for coro in coros
File "C:\Users\lucab\PycharmProjects\untitled\venv\lib\site-packages\requests_html.py",in <listcomp>
asyncio.ensure_future(coro()) for coro in coros
TypeError: 'coroutine' object is not callable
C:\Users\lucab\PycharmProjects\untitled\venv\lib\site-packages\discord\client.py:340: RuntimeWarning: coroutine 'Product.get_sizes_prices.<locals>.getlink' was never awaited
pass
RuntimeWarning: Enable tracemalloc to get the object allocation traceback
首先我只使用 HTMLSession(),检查文档后,我使用 AsyncHTMLSession,bc 这是 requests_html(https://pypi.org/project/requests-html/) 推荐的
还有我的 discord-Bot-Code:
import discord,os
from dotenv import load_dotenv
from get_product import Product
load_dotenv()
TOKEN = os.getenv('disCORD_TOKEN')
client = discord.Client()
@client.event
async def on_message(message):
if message.content.startswith('!test'):
product = message.content
product.replace('!test','') #to only get the string after the !test command
product_obj = Product(product)
array = product_obj.get_sizes_prices() #the return values are stored in "array"
varembed = discord.Embed(
title = "XXXXXX",description='SKU: '+XXXXX,url = XXXXXX,color = discord.Colour.darker_grey(),)
varembed.set_footer(text="XXXX" )
for i in array[0]:
for x in array[1]:
varembed.add_field(name="",value="",inline=True)
await message.channel.send(embed=varembed)
client.run(TOKEN)
编辑: 对我有用的是: 使用等待调用 discord-Bot 中的函数:
array = await product_obj.get_sizes_prices()
将异步设置为函数本身:
async def get_sizes_prices(self):
并在 await 上设置 async_session:
result = await async_session.get('some url' + self._url)
result_slug = result.text
解决方法
此错误通常是由于您未await
使用异步函数造成的。在这种情况下,我相信它是在您调用 get_url()
时引起的。我假设您创建该嵌入式函数是因为它要求您等待 asession.get
而您不能,因为 get_sizes_prices
不是' t 也异步。
以下是一些未经测试的代码,应该可以解决您的问题。
async def get_sizes_prices(self):
nest_asyncio.apply()
asession = AsyncHTMLSession()
# create session from given endpoint with keywords/sku
response = await asession.get('a special URL' + self._url)
result_slug = response.html
我所做的是删除了嵌入式功能。将 await
语句添加到 asession.get
并使整个函数异步。因此,您还需要await
首先在任何地方调用此函数。
我使用文档 here 作为需要等待或不需要等待的方法的参考。希望能解决您的问题:)