null 0.6.1

Implements the null object pattern.

Implements the null object pattern.

Provides:

• a Null singleton that can be used like None (but is not None and is not equal to None)

• a NullList that returns Null instead of raising IndexError

• a NullDict that returns Null instead of raising KeyError

• a nullify() routine that converts mappings and sequences to the nullified variant

• an unset singleton for clearing up APIs to distinguish between a keyword argument that is set by the user as None and simply not set by the user

How do I run the tests?

The easiest way would be to extract the source tarball and run:

$ python test/test_null.py

Change Log

0.6.1

• MANIFEST.in will forever be my favourite gotcha of Python packaging

• PEP8-fied the sources

0.6.0

• long overdue Python 3 support

0.5.0

• initial published version

Authors

Glued together by Łukasz Langa.