From 50f37fe01adf2902c1cef7375bcc731a1e22706b Mon Sep 17 00:00:00 2001
From: Paul Sokolovsky <pfalcon@users.sourceforge.net>
Date: Fri, 18 Apr 2014 04:29:57 +0300
Subject: [PATCH] itertools: Add partial implementation.

---
 itertools/itertools.py | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 itertools/itertools.py

diff --git a/itertools/itertools.py b/itertools/itertools.py
new file mode 100644
index 00000000..ed8f51f4
--- /dev/null
+++ b/itertools/itertools.py
@@ -0,0 +1,36 @@
+def count(start, step=1):
+    while True:
+        yield start
+        start += step
+
+def cycle(p):
+    while True:
+        yield from p
+
+def repeat(el, n=None):
+    if n is None:
+        while True:
+            yield el
+    else:
+        for i in range(n):
+            yield el
+
+def chain(*p):
+    for i in p:
+        yield from i
+
+def islice(p, start, stop=(), step=1):
+    if stop == ():
+        stop = start
+        start = 0
+    while True:
+        try:
+            yield p[start]
+        except IndexError:
+            return
+        start += step
+        if start >= stop:
+            return
+
+def tee(iterable, n=2):
+    return [iter(iterable)] * n