All of that sounds like faults of Python, particularly with its horrible lambda syntax. (E.g. 'map (+ 2) list' is much easier to read than a list comprehension.

All of that sounds like faults of Python, particularly with its horrible lambda syntax. (E.g. 'map (+ 2) list' is much easier to read than a list comprehension.) Besides, I am not sure why you couldn't generalize map to lazy structures the same way you do with for--Python might not do that, but that is again Python's fault. Conceptually, a for...in loop is basically like a map, except that it doesn't return a list. Of course, this is yet another fault of Python with an arbitrary separation of statements and expressions. If the for...in loop was just an expression--and that's basically what a list comprehension is, if you squint--it would probably be exactly like map. My real point was that the only way to get C-style for-loop behavior in Python is to do for i in range(a,b), which is basically equivalent to map fn [1..10].