From 8415bb7a25b1cb7ed58f09d92bef372195bc5597 Mon Sep 17 00:00:00 2001
From: Jeff Reback <jeff@reback.net>
Date: Sun, 5 Feb 2017 15:11:00 -0500
Subject: [PATCH] docs

---
 pandas/indexes/interval.py |  2 +-
 pandas/src/interval.pyx    | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/pandas/indexes/interval.py b/pandas/indexes/interval.py
index 4bfa211ce443c..fbc1b3ebc8c51 100644
--- a/pandas/indexes/interval.py
+++ b/pandas/indexes/interval.py
@@ -73,7 +73,7 @@ class IntervalIndex(IntervalMixin, Index):
     Immutable Index implementing an ordered, sliceable set. IntervalIndex
     represents an Index of intervals that are all closed on the same side.
 
-    .. versionadded:: 0.18
+    .. versionadded:: 0.20.0
 
     Properties
     ----------
diff --git a/pandas/src/interval.pyx b/pandas/src/interval.pyx
index b6d550eedca21..bc2a02e8bc37a 100644
--- a/pandas/src/interval.pyx
+++ b/pandas/src/interval.pyx
@@ -46,6 +46,20 @@ cdef _interval_like(other):
 
 
 cdef class Interval(IntervalMixin):
+    """
+    Immutable object implementing an Interval, a bounded slice-like interval.
+
+    .. versionadded:: 0.20.0
+
+    Properties
+    ----------
+    left, right : values
+        Left and right bounds for each interval.
+    closed : {'left', 'right', 'both', 'neither'}
+        Whether the interval is closed on the left-side, right-side, both or
+        neither. Defaults to 'right'.
+    """
+
     cdef readonly object left, right
     cdef readonly str closed