text: #!/usr/bin/env python
  #
  # A library that provides a Python interface to the Telegram Bot API
  # Copyright (C) 2015-2017
  # Leandro Toledo de Souza <devs@python-telegram-bot.org>
  #
  # This program is free software: you can redistribute it and/or modify
  # it under the terms of the GNU Lesser Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # This program 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 Public License for more details.
  #
  # You should have received a copy of the GNU Lesser Public License
  # along with this program.  If not, see [http://www.gnu.org/licenses/].
  """This module contains an object that represents a Telegram Error."""
  
  
  def _lstrip_str(in_s, lstr):
      """
      Args:
          in_s (str): in string
          lstr (str): substr to strip from left side
  
      Returns:
          str:
  
      """
      if in_s.startswith(lstr):
          res = in_s[len(lstr):]
      else:
          res = in_s
      return res
  
  
  class TelegramError(Exception):
      """This object represents a Telegram Error."""
  
      def __init__(self, message):
          """
          Args:
              message (str):
  
          Returns:
  
          """
          super(TelegramError, self).__init__()
  
          msg = _lstrip_str(message, 'Error: ')
          msg = _lstrip_str(msg, '[Error]: ')
          msg = _lstrip_str(msg, 'Bad Request: ')
          if msg != message:
              # api_error - capitalize the msg...
              msg = msg.capitalize()
          self.message = msg
  
      def __str__(self):
          return '%s' % (self.message)
  
  
  class Unauthorized(TelegramError):
      pass
  
  
  class InvalidToken(TelegramError):
      def __init__(self):
          super(InvalidToken, self).__init__('Invalid token')
  
  
  class NetworkError(TelegramError):
      pass
  
  
  class BadRequest(NetworkError):
      pass
  
  
  class TimedOut(NetworkError):
      def __init__(self):
          super(TimedOut, self).__init__('Timed out')
  
  
  class ChatMigrated(TelegramError):
      def __init__(self, new_chat_id):
          """
          Args:
              new_chat_id (int):
  
          """
          super(ChatMigrated,
                self).__init__('Group migrated to supergroup. New chat id: {}'.format(new_chat_id))
          self.new_chat_id = new_chat_id
  
  
  class RetryAfter(TelegramError):
      def __init__(self, retry_after):
          """
          Args:
              retry_after (int):
  
          """
          super(RetryAfter,
                self).__init__('Flood control exceeded. Retry in {} seconds'.format(retry_after))
          self.retry_after = float(retry_after)
  