Python中Discord Webhook重复发送历史Embed消息问题求助

问题代码 #

from discord_webhook import DiscordWebhook, DiscordEmbed
import csv
import os

webhook = DiscordWebhook(url='https://discordapp.c.........')


file_name = 'symbols.csv'
all_data = []
def load_csv():
    with open(file_name, 'r') as dict:
        rows = csv.DictReader(dict)
        for row in rows:
            all_data.append(row)

load_csv()
while True:
    coinname = (input("ENTER COINNAME: ")).upper()                    
    if coinname:
        for data in all_data:
            if data['BASE'].strip()  == coinname.strip():
                embed = DiscordEmbed(title=f'{coinname}/USDT', description=f'**{coinname}**', color=65280, url=f'https://www.binance.com/en/trade/{coinname}_USDT?layout=pro')
                print(f"[+] Message: {embed}")
                webhook.add_embed(embed)
                response = webhook.execute()
                print(response)
                os.system('cls') 

问题描述 #

首次输入加密货币名称（如ETH）时，Discord Webhook可正常发送对应Embed消息；但第二次输入（如BTC）时，会将首次与当前的Embed消息一并发送。希望每次输入仅发送当前对应加密货币的Embed消息。

原因分析 #

你只初始化了一个webhook实例，每次调用webhook.add_embed()都会往这个实例里追加新的Embed内容，导致后续发送时会包含之前所有添加过的Embed。

解决方案 #

有两种简单的解决方式：

方式一：每次发送前清空已有Embed #

在添加新Embed之前，调用webhook.remove_embeds()清空实例中已有的所有Embed，确保每次只发送当前的内容。

修改后的代码：

from discord_webhook import DiscordWebhook, DiscordEmbed
import csv
import os

webhook = DiscordWebhook(url='https://discordapp.c.........')

file_name = 'symbols.csv'
all_data = []
def load_csv():
    with open(file_name, 'r') as dict:
        rows = csv.DictReader(dict)
        for row in rows:
            all_data.append(row)

load_csv()
while True:
    coinname = (input("ENTER COINNAME: ")).upper()                    
    if coinname:
        for data in all_data:
            if data['BASE'].strip()  == coinname.strip():
                embed = DiscordEmbed(title=f'{coinname}/USDT', description=f'**{coinname}**', color=65280, url=f'https://www.binance.com/en/trade/{coinname}_USDT?layout=pro')
                print(f"[+] Message: {embed}")
                # 清空之前添加的所有Embed
                webhook.remove_embeds()
                webhook.add_embed(embed)
                response = webhook.execute()
                print(response)
                os.system('cls') 

方式二：每次循环内重新创建Webhook实例 #

把webhook的初始化代码放到while True循环内部，每次输入都新建一个独立的Webhook对象，自然不会携带之前的Embed内容。

修改后的代码：

from discord_webhook import DiscordWebhook, DiscordEmbed
import csv
import os

file_name = 'symbols.csv'
all_data = []
def load_csv():
    with open(file_name, 'r') as dict:
        rows = csv.DictReader(dict)
        for row in rows:
            all_data.append(row)

load_csv()
while True:
    coinname = (input("ENTER COINNAME: ")).upper()                    
    if coinname:
        # 每次输入都新建Webhook实例
        webhook = DiscordWebhook(url='https://discordapp.c.........')
        for data in all_data:
            if data['BASE'].strip()  == coinname.strip():
                embed = DiscordEmbed(title=f'{coinname}/USDT', description=f'**{coinname}**', color=65280, url=f'https://www.binance.com/en/trade/{coinname}_USDT?layout=pro')
                print(f"[+] Message: {embed}")
                webhook.add_embed(embed)
                response = webhook.execute()
                print(response)
                os.system('cls') 

内容的提问来源于stack exchange，提问作者AhmDen