Using python's "in" syntax with udf dictionaries

[alneberg]

I tried using python's "in" syntax, i.e.

print 'Amount (ng)' in artifact.udf

This should return True or False, but results in the following error:

KeyError                                  Traceback (most recent call last)
<ipython-input-52-488d06a8dc5e> in <module>()
----> 1 print 'Amount (ng)' in artifact.udf

/Users/johannesalneberg/.virtualenvs/genologics-lims/lib/python2.7/site-packages/genologics-0.2.3-py2.7.egg/genologics/entities.pyc in __getitem__(self, key)
    222
    223     def __getitem__(self, key):
--> 224         return self._lookup[key]
    225
    226     def __setitem__(self, key, value):

KeyError: 0

I don't know how the 0 ends up there.. This would be a nice feature to have, especially since the LIMS seems to erase the entire field from an artifact if the user erases the value of it... Might be something to contact Genologics about as well?