# telegram.ChatMemberUpdated

class telegram.ChatMemberUpdated(chat, from_user, date, old_chat_member, new_chat_member, invite_link=None, **_kwargs)

  Bases: `telegram.base.TelegramObject`

  This object represents changes in the status of a chat member.

  Objects of this class are comparable in terms of equality. Two objects of this class are considered equal, if their `chat`, `from_user`, `date`, `old_chat_member` and `new_chat_member` are equal.

  New in version 13.4.

  Note

  In Python `from` is a reserved word, use `from_user` instead.

  Parameters

    - chat (`telegram.Chat`) – Chat the user belongs to.

    - from_user (`telegram.User`) – Performer of the action, which resulted in the change.

    - date (`datetime.datetime`) – Date the change was done in Unix time. Converted to `datetime.datetime`.

    - old_chat_member (`telegram.ChatMember`) – Previous information about the chat member.

    - new_chat_member (`telegram.ChatMember`) – New information about the chat member.

    - invite_link (`telegram.ChatInviteLink`, optional) – Chat invite link, which was used by the user to join the chat. For joining by invite link events only.

  chat

    Chat the user belongs to.

    Type

      `telegram.Chat`

  from_user

    Performer of the action, which resulted in the change.

    Type

      `telegram.User`

  date

    Date the change was done in Unix time. Converted to `datetime.datetime`.

    Type

      `datetime.datetime`

  old_chat_member

    Previous information about the chat member.

    Type

      `telegram.ChatMember`

  new_chat_member

    New information about the chat member.

    Type

      `telegram.ChatMember`

  invite_link

    Optional. Chat invite link, which was used by the user to join the chat.

    Type

      `telegram.ChatInviteLink`

  classmethod de_json(data, bot)

    See `telegram.TelegramObject.de_json()`.

  difference()

    Computes the difference between `old_chat_member` and `new_chat_member`.

    Example

        >>> chat_member_updated.difference()
        {'custom_title': ('old title', 'new title')}

    Note

    To determine, if the `telegram.ChatMember.user` attribute has changed, every attribute of the user will be checked.

    New in version 13.5.

    Returns

      A dictionary mapping attribute names to tuples of the form `(old_value, new_value)`

    Return type

      Dict[`str`, Tuple[`obj`, `obj`]]

  to_dict()

    See `telegram.TelegramObject.to_dict()`.