code: def check_address(address):
      
      if isinstance(address, tuple):
          check_host(address[0])
          check_port(address[1])
      elif isinstance(address, string_types):
          if os.name != 'posix':
              raise ValueError('Platform does not support UNIX domain sockets')
          if not (os.path.exists(address) or
                  os.access(os.path.dirname(address), os.W_OK)):
              raise ValueError('ADDRESS not a valid socket domain socket ({0})'
                               .format(address))
      else:
          raise ValueError('ADDRESS is not a tuple, string, or character buffer '
                           '({0})'.format(type(address).__name__))
docs: Check if the format of the address is correct
  
      Arguments:
          address (tuple):
              (``str``, ``int``) representing an IP address and port,
              respectively
  
              .. note::
                  alternatively a local ``address`` can be a ``str`` when working
                  with UNIX domain sockets, if supported by the platform
      Raises:
          ValueError:
              raised when address has an incorrect format
  
      Example:
          >>> check_address(('127.0.0.1', 22))