No, I don't think so. Closures in Python are very similar to Scheme (or modern Lisps). Python doesn't have an equivalent to set!. Instead assignment both def

No, I don't think so. Closures in Python are very similar to Scheme (or modern Lisps). Python doesn't have an equivalent to set!. Instead assignment both defines a local variable (if it doesn't already exist) and sets it. You can use "global" or the new "nonlocal" keywords to prevent the definition. Personally I don't mind the Python approach. It's more convenient than let/set! and I very rarely miss being able to set a variable in an outer scope.