code: def create_ad_hoc_field(cls, db_type):
          '''
          Give an SQL column description such as "Enum8('apple' = 1, 'banana' = 2, 'orange' = 3)"
          this method returns a matching enum field.
          '''
          import re
          try:
              Enum # exists in Python 3.4+
          except NameError:
              from enum import Enum # use the enum34 library instead
          members = {}
          for match in re.finditer("'(\w+)' = (\d+)", db_type):
              members[match.group(1)] = int(match.group(2))
          enum_cls = Enum('AdHocEnum', members)
          field_class = Enum8Field if db_type.startswith('Enum8') else Enum16Field
          return field_class(enum_clsf create_ad_hoc_field(cls, db_type):
          '''
          Give an SQL column description such as "Enum8('apple' = 1, 'banana' = 2, 'orange' = 3)"
          this method returns a matching enum field.
          '''
          import re
          try:
              Enum # exists in Python 3.4+
          except NameError:
              from enum import Enum # use the enum34 library instead
          members = {}
          for match in re.finditer("'(\w+)' = (\d+)", db_type):
              members[match.group(1)] = int(match.group(2))
          enum_cls = Enum('AdHocEnum', members)
          field_class = Enum8Field if db_type.startswith('Enum8') else Enum16Field
          return field_class(enum_cls)
docs: Give an SQL column description such as "Enum8('apple' = 1, 'banana' = 2, 'orange' = 3)"
          this method returns a matching enum field.