如何使用 Telethon 获取转发消息的 channel/chat/user 名称？

Question

我尝试通过频道 ID 获取频道名称：

result = self._client(GetHistoryRequest(
        entity,
        limit=100,
        offset_date=None,
        offset_id=0,
        max_id=0,
        min_id=last_read_message_id,
        add_offset=0
    ))
for message in result.messages:
    if isinstance(message.fwd_from, MessageFwdHeader):
        fwd_channel_id = message.fwd_from.channel_id
        if fwd_channel_id:
            fwd_result = self._client(GetFullChannelRequest( # problem!!!
                InputPeerChannel(message.fwd_from.channel_id, 0)
            ))

message.fwd_from 看起来像：

fwd_from=MessageFwdHeader(
  channel_id=1053596007, 
  date=datetime.fromtimestamp(1507891987.0), 
  post_author=None, # None!!!
  from_id=None, 
  channel_post=3030
),

所以，我无法使用 message.fwd_from 中的频道名称。而且我不加入这个频道。

当我尝试调用 GetFullChannelRequest 时，出现下一个错误：

ChannelInvalidError(...), 'Invalid channel object. Make sure to pass the right types, for instance making sure that the request is designed for channels or otherwise look for a different one more suited.'

如何正确获取频道名称？

Answer 1

回答here

示例：

result = self._client(GetHistoryRequest(
        entity,
        limit=100,
        offset_date=None,
        offset_id=0,
        max_id=0,
        min_id=last_read_message_id,
        add_offset=0
    ))
for message in result.messages:
    if isinstance(message.fwd_from, MessageFwdHeader):
            entity = self._client.get_input_entity(
                PeerChannel(message.fwd_from.channel_id)
            )
            if message.fwd_from.channel_id:
                fwd_result = self._client(GetFullChannelRequest(entity))
                if hasattr(fwd_result, 'chats') and len(fwd_result.chats) > 0:
                    fwd_title = fwd_result.chats[0].title

如何使用 Telethon 获取转发消息的 channel/chat/user 名称？

How to get channel/chat/user name of forwarded message using Telethon?

python

python-3.x

telegram

telethon