diff -r 8ebbab768e1b Doc/library/itertools.rst
--- a/Doc/library/itertools.rst	Tue Dec 25 18:49:24 2012 +0200
+++ b/Doc/library/itertools.rst	Wed Dec 26 01:16:16 2012 +0400
@@ -650,6 +650,19 @@
        "Return first n items of the iterable as a list"
        return list(islice(iterable, n))
 
+   def drop(n, iterable):
+       "Return items of the iterable except first n as a list"
+       return list(islice(iterable, n, None))
+
+   def takelast(n, iterable):
+       "Return iterator to produce last n items from origin"
+       return iter(collections.deque(iterable, maxlen=n))
+
+   def droplast(n, iterable):
+       "Return iterator to produce items from origin except last n"
+       t1, t2 = tee(iterable)
+       return map(operator.itemgetter(0), zip(t1, islice(t2, n, None)))
+
    def tabulate(function, start=0):
        "Return function(0), function(1), ..."
        return map(function, count(start))
@@ -730,6 +743,16 @@
        t1, t2 = tee(iterable)
        return filterfalse(pred, t1), filter(pred, t2)
 
+   def splitat(t, iterable):
+       "Split iterable into two iterators after given number of iterations"
+       t1, t2 = tee(iterable)
+       return isice(t1, t), islice(t2, t, None)
+
+   def splitby(pred, iterable):
+       "Split iterable into two iterators at first false predicate"
+       t1, t2 = tee(iterable)
+       return takewhile(pred, t1), dropwhile(pred, t2)
+
    def powerset(iterable):
        "powerset([1,2,3]) --> () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)"
        s = list(iterable)