Diez B. Roggisch wrote: >> No, the list comprehension lets you write an expression directly >> avoiding a function call, and it also allows you to add in a >> condition which can be used to filer the sequence. Your proposal adds >> nothing. > > It does. Consider this: > > whatever = [x for x in xrange(1000000000) while x < 10] > > > That would run only in a splitsecond of what the whole listcomp would.
Except that the comparable listcomp today is: whatever = [x for x in takewhile(lambda x: x < 10, xrange(1000000000))] which also runs in a split second. Actually, the OP was correct, it does add something: it removes the need for a function or lambda in the takewhile just as the original listcomp removes a function or lambda compared with the map version. -- http://mail.python.org/mailman/listinfo/python-list
