substituting list comprehensions for map()

[Bruno Desthuilliers]

Ben Finney a écrit :
(snip)
> Yes, just about any ‘map()’ operation has a corresponding list
> comprehension.

Right AFAICT, but:

> (Does anyone know of a counter-example, a ‘map()’
> operation that doesn't have a correspondingly simple list
> comprehension?)

... depends on your definition of "simple". There are things I'd rather 
not write as a list comprehension...