Or, with a little setup, the Closure snippet (def s (range 0 10)) (reduce + (map inc (filter even? s))) can be turned into Python's from functool

Or, with a little setup, the Closure snippet (def s (range 0 10)) (reduce + (map inc (filter even? s))) can be turned into Python's from functools import reduce from operator import add def inc(x): return x + 1 def even(x): return x % 2 == 0 s = range(0, 10) reduce(add, map(inc, filter(even, s))) Everything's lazy in there. It's just... not very Pythonic.