python - Is there a single way to store different media types in Telegram bot? - Stack Overflow

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I'm doing different Telegram bots, that can send media to their users.
For video files I used this code to store video uploaded by admin:

caption = event.message.text or ""
file_id = event.message.file.id
data['file_id'] = file_id
data['caption'] = caption
save_data(data)

And this to restore it and send to a user:

data = load_data()
file_id = data['file_id'],
caption = data['caption']
bot.send_video(message.chat.id, file_id ], caption=caption)

To save and restore images I didn't find file_id usage, but this with PKL extension:

async with client.conversation(user_id) as conv:
    await conv.send_message("Upload a photo")
    photo_event = await conv.get_response()
    save_price_pic(photo_event.photo)

def save_price_pic(photo):
    with open('price.pkl', 'wb') as file:
        pickle.dump(photo, file)

And restore:

def load_price_pic():
    with open('price.pkl', 'rb') as file:
        return pickle.load(file)
photo = load_price_pic()
client.send_file(user_id,
                photo,
                caption = "my caption")

Is there any similar method to work with this media? I'd prefer to use file_id in both cases.

I'm doing different Telegram bots, that can send media to their users.
For video files I used this code to store video uploaded by admin:

caption = event.message.text or ""
file_id = event.message.file.id
data['file_id'] = file_id
data['caption'] = caption
save_data(data)

And this to restore it and send to a user:

data = load_data()
file_id = data['file_id'],
caption = data['caption']
bot.send_video(message.chat.id, file_id ], caption=caption)

To save and restore images I didn't find file_id usage, but this with PKL extension:

async with client.conversation(user_id) as conv:
    await conv.send_message("Upload a photo")
    photo_event = await conv.get_response()
    save_price_pic(photo_event.photo)

def save_price_pic(photo):
    with open('price.pkl', 'wb') as file:
        pickle.dump(photo, file)

And restore:

def load_price_pic():
    with open('price.pkl', 'rb') as file:
        return pickle.load(file)
photo = load_price_pic()
client.send_file(user_id,
                photo,
                caption = "my caption")

Is there any similar method to work with this media? I'd prefer to use file_id in both cases.

• python
• bots
• telegram
• telethon
• telebot

Share Improve this question Follow asked 2 days ago PlemPlem 344 bronze badges

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1 Answer 1

Sorted by: Reset to default 0

This is a Telethon-specific thing, file_id support is deprecated but may still work for non-photo. There are a few approaches:

First way and shortest is hacky, patch the library to make message.file.id work for photos too, If you want to keep using your currently stored video file_ids. In the file you do your imports, add:

import telethon

telethon.types.PhotoSize.location = type('', (int,), {"__getattr__": lambda s, _: s})()

location is removed by Telegram api, so this ignores the accesses to it and returns 0

---

Mimicing your own "file_id":

Telethon mainly works with objects, unlike BotApi that uses json-safe variants. Pickling a full object now is overkill, you only need 2 integer values to send a media already in Telegram: id, access_hash (file_reference can be ignored by bots), so It's more efficient to pack those and a media type however you want, one way with split:

def save_media(message) -> str:
    media = message.file.media
    media_type = 0 if message.photo else 1
    return f'{media_type}|{media.id}|{media.access_hash}'



def load_media(identifier: str):
    mtype, mid, mhash = map(int, identifier.split('|'))
    if mtype == 0:
        return telethon.types.InputPhoto(mid, mhash, b'')
    return telethon.types.InputDocument(mid, mhash, b'')

You get something as 'p|10000000000|-2000000000' to store, and pass it to load_media() to get object passed to usual send_file.

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