[英]How to send pdf file back to user using python telegram bot?
I tried to use update.sendDocument(chat_id = update.message.chat_id, document = open(something.pdf, 'b'))
but it did not return me a pdf file.我尝试使用
update.sendDocument(chat_id = update.message.chat_id, document = open(something.pdf, 'b'))
但它没有返回 pdf 文件。 Any help?有什么帮助吗?
For reference, here's a full working example, that worked for me.作为参考,这是一个完整的工作示例,对我有用。 If it still doesnt work, ensure that the pdf docs you send are below 20 MB as per https://core.telegram.org/bots/api#sending-files
如果它仍然不起作用,请确保您发送的 pdf 文档按照https://core.telegram.org/bots/api#sending-files低于 20 MB
#!/usr/bin/python
import sys
import time
import telepot
import cookie
from telepot.loop import MessageLoop
import pdb
def handle(msg):
content_type, chat_type, chat_id = telepot.glance(msg)
print(content_type, chat_type, chat_id)
if content_type == 'text' and msg["text"].lower() == "news":
# let the human know that the pdf is on its way
bot.sendMessage(chat_id, "preparing pdf of fresh news, pls wait..")
file="/home/ubuntu/web/news.pdf"
# send the pdf doc
bot.sendDocument(chat_id=chat_id, document=open(file, 'rb'))
elif content_type == 'text':
bot.sendMessage(chat_id, "sorry, I can only deliver news")
# replace XXXX.. with your token
TOKEN = 'XXXXXXXXXXXXXXXXXXXX'
bot = telepot.Bot(TOKEN)
MessageLoop(bot, handle).run_as_thread()
print ('Listening ...')
# Keep the program running.
while 1:
time.sleep(10)
To send document to user you must have the file_id
of that document.要将文档发送给用户,您必须具有该文档的
file_id
。
Assuming that the user sent the document to bot
and you want to send back to user, this is my solution:假设用户将文档发送给
bot
并且您想发回给用户,这是我的解决方案:
def file_handler (update, context):
chat_id = update.message.chat_id
## retrieve file_id from document sent by user
fileID = update.message['document']['file_id']
context.bot.sendDocument(chat_id = chat_id,
caption = 'This is the file that you've sent to bot',
document = fileID)
And on def main()
you must add:在
def main()
上,您必须添加:
updater.dispatcher.add_handler(MessageHandler(Filters.document, file_handler))
With this last line, your bot
will understand that when user send it a document, and only a document, it will call def file_handler
.通过最后一行,您的
bot
将了解当用户向其发送一个文档且仅一个文档时,它将调用def file_handler
。
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