old_contents: """
  amqproto.settings
  ~~~~~~~~~~~~~~~~~
  
  AMQP connection settings.
  """
  
  import platform
  import pkg_resources
  
  import attr
  
  FRAME_MIN_SIZE = 4096
  
  # The properties SHOULD contain at least these fields:
  # * "product", giving the name of the client product,
  # * "version", giving the name of the client version,
  # * "platform", giving the name of the operating system,
  # * "copyright", if appropriate, and
  # * "information", giving other general information.
  DEFAULT_CLIENT_PROPERTIES = {
      'product': 'amqproto',
      'version': str(pkg_resources.get_distribution('amqproto').version),
      'platform': platform.platform(),
      'copyright': '(c) Dmitry Malinovsky (aka malinoff) and contributors',
      'information': '',
  }
  
  
  @attr.s()
  class Settings:  # pylint: disable=too-few-public-methods
      """Connection settings: client-side, server-side and
      negotiated parameters.
  
      :param properties: a dictionary of arbitrary properties.
          Unlikely needs to be ever changed.
      :param locale: preferred locale. Unlikely needs to be ever changed.
      :param channel_max: limit maximum channels. 0 means no specific limit.
          Unlikely needs to be ever changed.
      :param frame_max: limit maximum frame size. 0 means no specific limit.
          Unlikely needs to be ever changed.
      :param heartbeat: heartbeat delay in seconds. 0 means no heartbeats,
          which is not recommended.
      """
  
      # Either 'client', or 'server', or 'negotiated'
      type = attr.ib(default='client')
  
      properties = attr.ib(default=None)
      locales = attr.ib(default='en_US')
      mechanisms = attr.ib(default='')
      channel_max = attr.ib(default=0)
      frame_max = attr.ib(default=0)
      heartbeat = attr.ib(default=60)
  
      def __attrs_post_init__(self):
          if self.type == 'client':
              if self.properties is None:
                  self.properties = DEFAULT_CLIENT_PROPERTIES
              # pylint: disable=no-member
              if len(self.locales.split(' ')) > 1:
                  raise RuntimeError('more than one locale is not supported')
              if len(self.mechanisms.split(' ')) > 1:
                  raise RuntimeError('more than one mechanism is not supported')
  
          if self.type == 'negotiated' and self.frame_max == 0:
              self.frame_max = FRAME_MIN_SIZE
  
new_contents: """
  amqproto.settings
  ~~~~~~~~~~~~~~~~~
  
  AMQP connection settings.
  """
  
  import platform
  import pkg_resources
  
  import attr
  
  FRAME_MIN_SIZE = 4096
  
  DEFAULT_CLIENT_PROPERTIES = {
      'product': 'amqproto',
      'version': str(pkg_resources.get_distribution('amqproto').version),
      'platform': platform.platform(),
      'copyright': '(c) Dmitry Malinovsky (aka malinoff) and contributors',
      'information': '',
  }
  
  
  @attr.s()
  class Settings:  # pylint: disable=too-few-public-methods
      """Connection settings: client-side, server-side and
      negotiated parameters.
  
      :param properties: a dictionary of arbitrary properties.
          Unlikely needs to be ever changed.
      :param locale: preferred locale. Unlikely needs to be ever changed.
      :param channel_max: limit maximum channels. 0 means no specific limit.
          Unlikely needs to be ever changed.
      :param frame_max: limit maximum frame size. 0 means no specific limit.
          Unlikely needs to be ever changed.
      :param heartbeat: heartbeat delay in seconds. 0 means no heartbeats,
          which is not recommended.
      """
  
      # Either 'client', or 'server', or 'negotiated'
      type = attr.ib(default='client')
  
      properties = attr.ib(default=None)
      locales = attr.ib(default='en_US')
      mechanisms = attr.ib(default='')
      channel_max = attr.ib(default=0)
      frame_max = attr.ib(default=0)
      heartbeat = attr.ib(default=60)
  
      def __attrs_post_init__(self):
          if self.type == 'client':
              if self.properties is None:
                  self.properties = DEFAULT_CLIENT_PROPERTIES
              # pylint: disable=no-member
              if len(self.locales.split(' ')) > 1:
                  raise RuntimeError('more than one locale is not supported')
              if len(self.mechanisms.split(' ')) > 1:
                  raise RuntimeError('more than one mechanism is not supported')
  
          if self.type == 'negotiated' and self.frame_max == 0:
              self.frame_max = FRAME_MIN_SIZE
  
subject: Remove useless comment