From 996e5f94d2014279e7fea0a66ce31f800fb7f625 Mon Sep 17 00:00:00 2001
From: Berker Peksag <berker.peksag@gmail.com>
Date: Mon, 26 Sep 2016 22:44:07 +0300
Subject: os.genenvb() is not availabnle under Windows

---
 Doc/library/os.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 56e4adc..efe4c9d 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -206,6 +206,9 @@ process and user.
    Return the value of the environment variable *key* if it exists, or
    *default* if it doesn't. *key*, *default* and the result are bytes.
 
+   :func:`getenvb` is only available if :data:`supports_bytes_environ`
+   is True.
+
    Availability: most flavors of Unix.
 
    .. versionadded:: 3.2
-- 
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