I never got python's lack of built in enum syntax. I get not wanting to add unnecessary keywords, but unless you're doing something like Scheme or Smalltalk where you're going for almost no syntax at all, you would think it would pay off to put in keywords for things that literally occur in every program. I feel like I should just be able to write this:

   enum Color: red, green, blue 

Right now enumerations are a mess. It seems like every project does them slightly differently, and the new enum library just adds a new way to do them slightly differently. That's like the opposite of PEP 8.