What's the correct way to deliver a PDF file to a user via a Python Telegram bot?

Other Questions Telegram bot
1

Hey everyone! I’m working on a Telegram bot using Python and I’m stuck on sending PDF files to users. I’ve tried this code:

bot.send_document(chat_id=user_id, document=open('report.pdf', 'rb'))

But it’s not working as expected. The file isn’t being sent to the user. Am I missing something? Maybe there’s a different method or some extra parameters I need to add? I’d really appreciate any advice or examples on how to properly send PDF files through a Telegram bot. Thanks in advance for your help!

2

Your approach is close, but there’s a crucial detail you might be overlooking. When sending files via Telegram bots, it’s essential to use the file’s binary content rather than just the file object. Here’s a more robust method:

from telegram import InputFile

with open(‘report.pdf’, ‘rb’) as file:
pdf_content = file.read()
pdf_file = InputFile(pdf_content, filename=‘report.pdf’)
bot.send_document(chat_id=user_id, document=pdf_file)

This method ensures the file is properly read and sent as binary data. It also allows you to specify a custom filename if needed. Remember to import the InputFile class from the telegram library. If you’re still encountering issues, check your bot’s permissions and the file path. Good luck with your project!

3

I’ve dealt with this issue before, and I can tell you that the approach you’re using is on the right track. However, there are a few things to consider. First, make sure your ‘report.pdf’ file is in the correct directory relative to your script. Also, it’s good practice to close the file after sending it.

Here’s a method that’s worked reliably for me:

with open('report.pdf', 'rb') as pdf_file:
    bot.send_document(chat_id=user_id, document=pdf_file)

This ensures the file is properly closed after sending. If you’re still having issues, double-check your bot token and user_id are correct. Also, make sure you have the necessary permissions to read the file and send messages to the user.

If none of that works, you might want to try using the file’s path instead:

bot.send_document(chat_id=user_id, document=open('/path/to/report.pdf', 'rb'))

Hope this helps! Let me know if you need any more clarification.

4

hey mate, i had similar issue. try this:

from telegram.constants import ParseMode

bot.send_document(
    chat_id=user_id,
    document=open('report.pdf', 'rb'),
    filename='awesome_report.pdf',
    caption='Here's ur PDF!',
    parse_mode=ParseMode.MARKDOWN
)

this worked 4 me. make sure ur file path is correct tho!