Convenience package offering "nihil"
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README.rst
nihilo.py
setup.py

README.rst

nihilo

This package allows you to do the fantastic import:

>>> from nihilo import nihil

This is a nice object which behaves like None but does accept method calls. Why would you want this?

So, we have:

>>> a_dict = { 'who': 'Parmenides' }
>>> print a_dict.get('who')
Parmenides
>>> print a_dict.get('where')
None
But you might want to do:
>>> a_dict.get('who').startswith('g')
False
>>> a_dict.get('where').startswith('g')
Traceback (most recent call last):
...
AttributeError: 'NoneType' object has no attribute 'startswith'
With nihil, you can do:
>>> a_dict.get('where', nihil).startswith('g')
nihil()

Note that casting to bool returns false, so you can easily test..:

>>> if a_dict.get('where', nihil).startwith('g'):
...   print "got it!"

nihil is very flexible, it will also allow you to call almost any method and it will return itself:

>>> nihil.foo.bar('quux', frop=True)
nihil()

And remember, ex nihilo nihil fit.

It can also do some basic arithmetic and binary operations, adhering to the standard additive and multiplicative properties of zero.

>>> nihil + 5
5
>>> nihil - 5
-5
>>> nihil * 5
nihil()
>>> nihil | 5
5
>>> nihil & 5
nihil()