old_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <gogogo.vm@gmail.com>
  """
  
  from __future__ import absolute_import
  import abc
  
  import six
  
  from .converter import NopConverterCreator
  from .converter import IntegerConverterCreator
  from .converter import FloatConverterCreator
  from .converter import DateTimeConverterCreator
  from ._type_checker_creator import NoneTypeCheckerCreator
  from ._type_checker_creator import IntegerTypeCheckerCreator
  from ._type_checker_creator import FloatTypeCheckerCreator
  from ._type_checker_creator import DateTimeTypeCheckerCreator
  from ._type_checker_creator import InfinityCheckerCreator
  
  
  @six.add_metaclass(abc.ABCMeta)
  class TypeConverterFactoryInterface(object):
      """
      Abstract factory class of type converter.
      """
  
      @abc.abstractproperty
      def type_checker_factory(self):   # pragma: no cover
          pass
  
      @abc.abstractproperty
      def value_converter_factory(self):   # pragma: no cover
          pass
  
  
  class NoneTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return NoneTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return NopConverterCreator()
  
  
  class IntegerTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return IntegerTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return IntegerConverterCreator()
  
  
  class FloatTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return FloatTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return FloatConverterCreator()
  
  
  class DateTimeTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return DateTimeTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return DateTimeConverterCreator()
  
  
  class InfinityTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return InfinityCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return FloatConverterCreator()
  
new_contents: # encoding: utf-8
  
  """
  .. codeauthor:: Tsuyoshi Hombashi <gogogo.vm@gmail.com>
  """
  
  from __future__ import absolute_import
  import abc
  
  import six
  
  from .converter import NopConverterCreator
  from .converter import IntegerConverterCreator
  from .converter import FloatConverterCreator
  from .converter import DateTimeConverterCreator
  from ._type_checker_creator import NoneTypeCheckerCreator
  from ._type_checker_creator import IntegerTypeCheckerCreator
  from ._type_checker_creator import FloatTypeCheckerCreator
  from ._type_checker_creator import DateTimeTypeCheckerCreator
  from ._type_checker_creator import InfinityCheckerCreator
  from ._type_checker_creator import NanCheckerCreator
  
  
  @six.add_metaclass(abc.ABCMeta)
  class TypeConverterFactoryInterface(object):
      """
      Abstract factory class of type converter.
      """
  
      @abc.abstractproperty
      def type_checker_factory(self):   # pragma: no cover
          pass
  
      @abc.abstractproperty
      def value_converter_factory(self):   # pragma: no cover
          pass
  
  
  class NoneTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return NoneTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return NopConverterCreator()
  
  
  class IntegerTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return IntegerTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return IntegerConverterCreator()
  
  
  class FloatTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return FloatTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return FloatConverterCreator()
  
  
  class DateTimeTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return DateTimeTypeCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return DateTimeConverterCreator()
  
  
  class InfinityTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return InfinityCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return FloatConverterCreator()
  
  
  class NanTypeFactory(TypeConverterFactoryInterface):
  
      @property
      def type_checker_factory(self):
          return NanCheckerCreator()
  
      @property
      def value_converter_factory(self):
          return FloatConverterCreator()
  
subject: Add NanTypeFactory class