twisted.python.constants.Flags : API documentation

Class Method _constantFactory For FlagConstant instances with no explicitly defined value, assign the next power of two as its value.

Method	__new__	Classes representing constants containers are not intended to be instantiated.
Class Method	lookupByName	Retrieve a constant by its name or raise a `ValueError` if there is no constant associated with that name.
Class Method	iterconstants	Iteration over a `Names` subclass results in all of the constants it contains.
Class Variable	_constantType	Specified by a `_ConstantsContainer` subclass to specify the type of constants allowed by that subclass.
Class Variable	_enumerants	A `dict` mapping the names of constants (eg `NamedConstant` instances) found in the class definition to those instances.

Method	__new__	Classes representing constants containers are not intended to be instantiated.
Class Method	lookupByName	Retrieve a constant by its name or raise a `ValueError` if there is no constant associated with that name.
Class Method	iterconstants	Iteration over a `Names` subclass results in all of the constants it contains.
Class Variable	_constantType	Specified by a `_ConstantsContainer` subclass to specify the type of constants allowed by that subclass.
Class Variable	_enumerants	A `dict` mapping the names of constants (eg `NamedConstant` instances) found in the class definition to those instances.

@classmethod
def _constantFactory(cls, name, descriptor): (source)

For FlagConstant instances with no explicitly defined value, assign the next power of two as its value.

Parameters	name	The name of the constant to create.
	descriptor	An instance of a `FlagConstant` which is assigned to `name`.
Returns	Either the value passed to the `descriptor` constructor, or the next power of 2 value which will be assigned to `descriptor`, relative to the value of the last defined `FlagConstant`.

twisted.python.constants.Flags(Values) class documentation