Ever needed a global object that act as None but not quite? Like for example
keyword argument for function, where None make sense, so you need a default
value.
One solution is to create as singleton object:
mysingleton = object()
Though it becomes difficult to track the singleton across libraries, and teach
users where to import this from. It's also relatively annoying use this
singleton across library.
Introducing undefined:
>>> import undefined
>>> from undefined import Undefined
>>> undefined is Undefined
True
NOTE: If this package has multiple flavors (see below), then use one of them instead of the name specified above. NOTE: This is a Python port. Instead of py39-undefined listed in the above command, you can pick from the names under the Packages section.
devel/py-undefined: Add py-undefined 0.0.8
Ever needed a global object that act as None but not quite? Like for example
keyword argument for function, where None make sense, so you need a default
value.
One solution is to create as singleton object:
mysingleton = object()
Though it becomes difficult to track the singleton across libraries, and teach
users where to import this from. It's also relatively annoying use this
singleton across library.
Introducing undefined:
>>> import undefined
>>> from undefined import Undefined
>>> undefined is Undefined
True
