Re: [Python-Dev] What's a PyStructSequence ?

The discussion on SF doesn't really answer my question. What Nick did is fascinating: he reused the type object implementation to mimic a sequence ! That's cool, but looks like an awfully tricky way of doing something straight forward such as sub-classing the tuple type to extend it with an additional dictionary. So the question remains: why did Nick *have* to implement this as meta-type ?

For one thing, you'll see from the discussion that extending the tuple type with an additional dict is non-trivial: You cannot define a C data type that does this. You'll also see that there was a version that did it, and that it was rejected precisely because of this problem. Regards, Martin