How can I receive file in python-telegram-bot?

You can:

• Register a handler that listens to Document
• get File object from the update (inside the listener using get_file)
• then simply call .download() to download the document

Here a sample code to get you started:

from telegram.ext import Updater, MessageHandler, Filters

BOT_TOKEN = ' ... '

def downloader(update, context):
    context.bot.get_file(update.message.document).download()

    # writing to a custom file
    with open("custom/file.doc", 'wb') as f:
        context.bot.get_file(update.message.document).download(out=f)


updater = Updater(BOT_TOKEN, use_context=True)

updater.dispatcher.add_handler(MessageHandler(Filters.document, downloader))

updater.start_polling()
updater.idle()