如何将媒体下载到 Telethon 上的特定路径

Question

我正在研究用于从电报下载媒体的 Telethon download_media 和 _download_document 方法。我的代码是这样的：

from telethon import TelegramClient

api_id = 12345
api_hash = '0123456789abcdef0123456789abcdef'
client = TelegramClient('anon', api_id, api_hash)

async def main():
    async for message in client.iter_messages('me'):
        print(message.id, message.text)

        # You can download media from messages, too!
        # The method will return the path where the file was saved.
        if message.photo:
            path = await message.download_media()
            print('File saved to', path)  # printed after download is done

with client:
    client.loop.run_until_complete(main())

但此代码无法将媒体下载到特定路径， 以及如何获取已保存文件的名称

Answer 1

Docs of telethon 表明download_media 方法接受名为file 的参数，即

输出文件路径、目录或类似流的对象。如果路径 存在并且是一个文件，它将被覆盖。如果文件是类型 字节，它将作为字节串下载到内存中（例如 文件=字节）。

我没有能力测试它，但是像替换

message.download_media()

与

message.download_media(file="path/to/downloads_dir")

应该可以。

Answer 2

你可以使用message.file.name获取文件名，这里是代码

from telethon import TelegramClient

api_id = 12345
api_hash = '0123456789abcdef0123456789abcdef'
client = TelegramClient('anon', api_id, api_hash)

async def main():
    async for message in client.iter_messages('me'):
        print(message.id, message.text)
        if message.photo:
            print('File Name :' + str(message.file.name))
            path = await client.download_media(message.media, "youranypathhere")
            print('File saved to', path)  # printed after download is done

with client:
    client.loop.run_until_complete(main())