text: #  Pyrogram - Telegram MTProto API Client Library for Python
  #  Copyright (C) 2017-2021 Dan <https://github.com/delivrance>
  #
  #  This file is part of Pyrogram.
  #
  #  Pyrogram is free software: you can redistribute it and/or modify
  #  it under the terms of the GNU Lesser General Public License as published
  #  by the Free Software Foundation, either version 3 of the License, or
  #  (at your option) any later version.
  #
  #  Pyrogram is distributed in the hope that it will be useful,
  #  but WITHOUT ANY WARRANTY; without even the implied warranty of
  #  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  #  GNU Lesser General Public License for more details.
  #
  #  You should have received a copy of the GNU Lesser General Public License
  #  along with Pyrogram.  If not, see <http://www.gnu.org/licenses/>.
  
  from typing import Union
  
  from pyrogram import raw
  from pyrogram.scaffold import Scaffold
  
  
  class BlockUser(Scaffold):
      async def block_user(
              self,
              user_id: Union[int, str]
      ) -> bool:
          """Block a user.
  
          Parameters:
              user_id (``int`` | ``str``)::
                  Unique identifier (int) or username (str) of the target user.
                  For you yourself you can simply use "me" or "self".
                  For a contact that exists in your Telegram address book you can use his phone number (str).
  
          Returns:
              ``bool``: True on success
  
          Example:
              .. code-block:: python
  
                  app.block_user(user_id)
          """
          return bool(
              await self.send(
                  raw.functions.contacts.Block(
                      id=await self.resolve_peer(user_id)
                  )
              )
          )
  