_findwrapper (
        obj,
        t,
        unknown,
        guess,
        )

Find or make an appropriate wrapper class for an object. If guess is false, will return None if it couldn't count the object very well.

_replacetype ( t,  dict )

Some of the entries in sizes are indexed by string, since there's no good prototype object to use. Search for this object as a string in there and replace the entry if it's found. Also search for keys which are of the form type rather than id(type).

multiplewrapper ( constructors )

This class can wrap an object which has used multiple inheritance. It will make a wrapper for each of its supertypes in turn and then try to combine them.