From 4e9e9c1c44309c90d167ab1e2a3e85582f1a52f8 Mon Sep 17 00:00:00 2001
From: Andrew Svetlov <andrew.svetlov@gmail.com>
Date: Mon, 13 Aug 2012 16:09:54 +0300
Subject: Issue #15571: comment the fact what python impl of TextIOWrapper
 always works in write_throuth mode

---
 Lib/_pyio.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Lib/_pyio.py b/Lib/_pyio.py
index 1ce61e9..387c585 100644
--- a/Lib/_pyio.py
+++ b/Lib/_pyio.py
@@ -1461,6 +1461,9 @@ class TextIOWrapper(TextIOBase):
 
     _CHUNK_SIZE = 2048
 
+    # The write_through argument has no effect here since this
+    # implementation always writes through.  The argument is present only
+    # so that the signature can match the signature of the C version.
     def __init__(self, buffer, encoding=None, errors=None, newline=None,
                  line_buffering=False, write_through=False):
         if newline is not None and not isinstance(newline, str):
-- 
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