From 5a4bcc1bc92bd5a90df2ee73f4ad2564313785f3 Mon Sep 17 00:00:00 2001
From: gfyoung <gfyoung17+GitHub@gmail.com>
Date: Mon, 21 Jan 2019 05:39:53 +0000
Subject: [PATCH] MAINT: Prefer FS encoding over UTF-8

---
 pandas/io/parsers.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/pandas/io/parsers.py b/pandas/io/parsers.py
index b31d3f665f47f2..6bf0425e6cdd25 100755
--- a/pandas/io/parsers.py
+++ b/pandas/io/parsers.py
@@ -1315,7 +1315,8 @@ def _validate_usecols_arg(usecols):
             # see gh-13253
             #
             # Python 2.x compatibility
-            usecols = {col.encode("utf-8") for col in usecols}
+            encoding = sys.getfilesystemencoding() or "utf-8"
+            usecols = {col.encode(encoding) for col in usecols}
 
         return usecols, usecols_dtype
     return usecols, None