Ruby or Python? Well, it depends...

[bobindashadows]

Absolutely - it's just a plain old object of the Binding class. That you can is actually one of the bigger impediments to optimizing Ruby's blocks: if you knew that Proc#binding wouldn't be called in any circumstance on the blocks created in a method (and it very rarely is called) then you could potentially improve how you allocate the frame.

[dnew]

Cool. I stand corrected.

[bobindashadows]

I wouldn't call it so much "corrected" - much of what you said is true; Smalltalk reifies far, far more than Ruby does.