API design question for dbf.py

[Ethan Furman]

I'm looking for some free advice.  ;)

My dbf module has three basic containers, all of which support list-like 
access:  Table, List, and Index, each of which is filled with _DbfRecords.

The fun part is that a _DbfRecord can compare equal to another 
_DbfRecord, a _DbfRecordTemplate, a tuple with the same values in the 
same locations, or a dict with the same keys/fields and values.

The really fun part is __contains__:  should the __contains__ method 
return True when a _DbfRecordTemplate, tuple, or dict is looked up in 
the Table, List, or Index and there is a matching record?

~Ethan~