old_contents: #!/usr/bin/env python3
  # The MIT License (MIT)
  #
  # Copyright (c) 2017 Kaede Hoshikawa
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  import botodesu
  
  
  async def hello() -> None:
      async with botodesu.Boto("YOUR_API_KEY") as boto:
          async for update in boto:
              if "message" not in update.keys():
                  continue
  
              message = update.message
  
              if "text" not in message.keys():
                  continue
  
              text = message.text
  
              await boto.send_message(
                  chat_id=message.chat.id,
                  text="You said: \"{}\".".format(text),
                  reply_to_message_id=message.message_id)
  
new_contents: #!/usr/bin/env python3
  # The MIT License (MIT)
  #
  # Copyright (c) 2017 Kaede Hoshikawa
  #
  # Permission is hereby granted, free of charge, to any person obtaining a copy
  # of this software and associated documentation files (the "Software"), to deal
  # in the Software without restriction, including without limitation the rights
  # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the Software is
  # furnished to do so, subject to the following conditions:
  #
  # The above copyright notice and this permission notice shall be included in
  # all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  # SOFTWARE.
  
  import botodesu
  import asyncio
  
  
  async def hello() -> None:
      async with botodesu.Boto("YOUR_API_KEY") as boto:
          async for update in boto:
              if "message" not in update.keys():
                  continue
  
              message = update.message
  
              if "text" not in message.keys():
                  continue
  
              text = message.text
  
              await boto.send_message(
                  chat_id=message.chat.id,
                  text="You said: \"{}\".".format(text),
                  reply_to_message_id=message.message_id)
  
  if __name__ == "__main__":
      loop = asyncio.get_event_loop()
      loop.run_until_complete(hello())
  
subject: Update example.