On Fri, 2007-09-21 at 13:57 +0000, [EMAIL PROTECTED] wrote: > Does it means that when overloading an operator, python just > wrap the call to the method and keep control of the returned > values ??? Is there a way to bypass this wrapping ???
The answers are "No in general, but yes in this case" and "No, not easily." Your problem is that the "in" operator is a comparison operator, which by definition returns either True or False. Python is not meant to be used as a Domain-Specific Language, so if you try to use it as one, you'll run into limitations. The fact that comparison operators always have boolean semantics is one of those limitations. (And yes, I imagine this is a feature, so that callers of comparison operators don't have to worry about checking whether the call really returned a boolean value, they can just rely on the fact that it did.) To bypass this behavior, I suppose you could try to change this by modifying Python's source code directly, but who knows what you might break in the process if you break the contract that "in" always returns True or False. In other words, try to find a different solution. -- Carsten Haese http://informixdb.sourceforge.net -- http://mail.python.org/mailman/listinfo/python-list
