That looks like exactly the solution i needed. I had resorted to wrapping the code in a try statement and catching the error it produced, but your method is much cleaner and more flexible.
What i was actually trying to accomplish was to describe a period of time - it could be defined by it's start date, end date, and duration, but only two of the three at any given time. I don't mind it being under-defined. Thanks! --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "TurboGears" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/turbogears?hl=en -~----------~----~----~----~------~----~------~--~---

