Package gavo :: Package utils :: Module misctricks :: Class Undefined

Class Undefined

object --+
         |
        Undefined

a sentinel for all kinds of undefined values.

Do not instantiate.

>>> Undefined()
Traceback (most recent call last):
TypeError: Undefined cannot be instantiated.
>>> bool(Undefined)
False
>>> repr(Undefined)
'<Undefined>'
>>> str(Undefined)
Traceback (most recent call last):
StructureError: Undefined cannot be stringified.

Nested Classes
	__metaclass__ the metaclass for Undefined.

Instance Methods

__init__(self)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Properties
Inherited from `object`: `__class__`

Method Details

init(self)
(Constructor)

source code

x.__init__(...) initializes x; see help(type(x)) for signature

Overrides: object.__init__: (inherited documentation)

Class Undefined

__init__(self) (Constructor)

init(self)
(Constructor)