让 Discord BOT 从 ftp 服务器 (Filezilla) 获取随机图像

Make Discord BOT get random image from a ftp server (Filezilla)

我只想说我在 python 方面没有任何经验。我正在尝试为私有 Discord 服务器制作一个机器人,该机器人在输入“$gimme”后从 ftp 服务器(根目录)发布随机图像(.jpg)。 #文件名是随机乱码

我已经搜索了几个小时来寻找解决方案,但我总是卡在某些地方。我无法弄清楚 ftp 与 discord 的语法,因为我对 python 的了解几乎不存在,无论我搜索多少答案我都可以'想不通。

这真是我最后的选择,我无处可寻。希望比我知识多一点的人能帮帮我。

谢谢

import os
import requests
import ftplib
from ftplib import FTP
import random

client = discord.Client()

ftp = FTP()
ftp.connect(os.getenv('BOP_IP'), 2021)
ftp.login(os.getenv('BOP_UN'), os.getenv('BOP_PW'))

#path='/'

@client.event
async def on_ready():
  print('We have logged in as {0.user}'
  .format(client))

@client.event
async def on_message(message):
  if message.author == client.user:
    return
  if message.content.startswith('$gimme'):
    await message.channel.send(#######)

client.run(os.getenv('TOKEN'))

使用回调方法编辑

我知道 python 和 FTP 不是 discord,但是通过查看文档我发现了如何在 discord 中发送文件。我制作了以下代码(未经测试)。我添加了一个从 FTP 服务器随机获取文件的函数,并在 on_message 函数

中调用了这个函数
import os
import requests
import ftplib
from ftplib import FTP
import random
import discord

client = discord.Client()

ftp = FTP()
ftp.connect(os.getenv('BOP_IP'), 2021)
ftp.login(os.getenv('BOP_UN'), os.getenv('BOP_PW'))

#path='/'
def download_random_file()
  file_list = ftp.nlst()
  random_file_name = random.choice(file_list)
  #download the file
  with open(random_file_name, 'wb') as fp:
    ftp.retrbinary('RETR {0}'.format(random_file_name), fp.write) 
    
  return random_file_name

@client.event
async def on_ready():
  print('We have logged in as {0.user}'
  .format(client))

@client.event
async def on_message(message):
  if message.author == client.user:
    return
  if message.content.startswith('$gimme'):
    file_downloaded = download_random_file()
    await message.channel.send(file=discord.File(file_downloaded))
    os.unlink(file_downloaded) #Delete the downloaded file

client.run(os.getenv('TOKEN'))

待优化:

  • 确保文件已下载(使用 try catch 块)
  • 确保下载的文件是图像(带有 MIMETYPE)

@axelinux

非常感谢您花时间帮助我。

当 运行 服务器上的“$gimme”

时出现以下错误
Ignoring exception in on_message
Traceback (most recent call last):
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/client.py", line 343, in _run_event
    await coro(*args, **kwargs)
  File "main.py", line 31, in on_message
    file_downloaded = download_random_file()
  File "main.py", line 17, in download_random_file
    ftp.retrbinary('RETR {0}'.format(random_file_name)) #download the file
TypeError: retrbinary() missing 1 required positional argument: 'callback'

@axelinux

再次感谢。

在 discord 中输入“$gimme”后,您发给我的修改后的代码返回以下内容:

Ignoring exception in on_message
Traceback (most recent call last):
  File "/opt/virtualenvs/python3/lib/python3.8/site-packages/discord/client.py", line 343, in _run_event
    await coro(*args, **kwargs)
  File "main.py", line 34, in on_message
    file_downloaded = download_random_file()
  File "main.py", line 20, in download_random_file
    ftp.retrbinary('RETR {0}'.format(random_file_name), fp.write)
  File "/usr/lib/python3.8/ftplib.py", line 425, in retrbinary
    with self.transfercmd(cmd, rest) as conn:
  File "/usr/lib/python3.8/ftplib.py", line 382, in transfercmd
    return self.ntransfercmd(cmd, rest)[0]
  File "/usr/lib/python3.8/ftplib.py", line 348, in ntransfercmd
    resp = self.sendcmd(cmd)
  File "/usr/lib/python3.8/ftplib.py", line 275, in sendcmd
    return self.getresp()
  File "/usr/lib/python3.8/ftplib.py", line 248, in getresp
    raise error_perm(resp)
ftplib.error_perm: 550 File not found

我做了一些搜索,我想我现在可以使用了:

def download_random_repo():
 ftp.cwd('/repo')
 file_list = ftp.nlst()
 random_file_name = random.choice(file_list)
 ftp.retrbinary('RETR {0}'.format(random_file_name), open(random_file_name, 'wb').write) #download the file
 return random_file_name

我所要做的就是将行更改为:ftp.retrbinary('RETR {0}'.format(random_file_name), open(random_file_name, 'wb' ).写)

非常感谢您的帮助。没有你就无法工作:)