code: def get_default_value(self):
          
  
          if self.choices:
              return self.choices[0]
  
          value = self.attribute_type()
  
          if self.attribute_type is time:
              value = int(value)
  
          elif self.attribute_type is str:
              value = "A"
  
          if self.min_length:
              if self.attribute_type is str:
                  value = value.ljust(self.min_length, 'a')
              elif self.attribute_type is int:
                  value = self.min_length
  
          elif self.max_length:
              if self.attribute_type is str:
                  value = value.ljust(self.max_length, 'a')
              elif self.attribute_type is int:
                  value = self.max_length
  
          return value
docs: Get a default value of the attribute_type