From 7def3b0dded4e742be1f7525be4b7f45441e36eb Mon Sep 17 00:00:00 2001
From: Anton Akhmerov <anton.akhmerov@gmail.com>
Date: Wed, 25 Apr 2018 12:28:14 +0200
Subject: [PATCH] missing import

---
 code/heat_capacity.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/code/heat_capacity.py b/code/heat_capacity.py
index ebd054fa..f361f360 100644
--- a/code/heat_capacity.py
+++ b/code/heat_capacity.py
@@ -1,3 +1,5 @@
+import os
+
 import matplotlib
 matplotlib.use('agg')
 from matplotlib import pyplot
-- 
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