From 70e6634248c36f68e882fc3a603bac236ab53670 Mon Sep 17 00:00:00 2001
From: Christos Tsakiroglou <c.tsakiroglou@oneshore.com>
Date: Fri, 30 Oct 2015 16:02:29 +0100
Subject: [PATCH] fixed ResourceWarning at readtmy3

---
 pvlib/tmy.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pvlib/tmy.py b/pvlib/tmy.py
index 9e5d1678de..4d419ae85f 100644
--- a/pvlib/tmy.py
+++ b/pvlib/tmy.py
@@ -190,6 +190,9 @@ def readtmy3(filename=None, coerce_year=None, recolumn=True):
 
     TMYData = TMYData.tz_localize(int(meta['TZ']*3600))
 
+    if not csvdata.closed:
+        csvdata.close()
+
     return TMYData, meta