text: class FMPException(Exception):
      def __init__(self, *args):
          if len(args) > 1:
              self.message = args[0]
              self.function_name = args[1]
          elif len(args) == 1:
              self.message = args[0]
          else:
              self.message = None
              self.function_name = None
  
      def __str__(self):
          if self.message and self.function_name:
              return 'FMPException.{0}, {1}'.format(self.function_name, self.message)
          elif self.message:
              return 'FMPException: {0}'.format(self.message)
          else:
              return 'FMPException has been raised'
              