From e5bd40baac7222c3710a3544565f379be1fc7e55 Mon Sep 17 00:00:00 2001
From: Julian Hammer <julian.hammer@fau.de>
Date: Fri, 20 Mar 2020 15:02:30 +0100
Subject: [PATCH] closing cache file

---
 osaca/semantics/hw_model.py | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/osaca/semantics/hw_model.py b/osaca/semantics/hw_model.py
index ef6a61d..a904b32 100755
--- a/osaca/semantics/hw_model.py
+++ b/osaca/semantics/hw_model.py
@@ -318,7 +318,8 @@ class MachineModel(object):
             # Check if modification date of DB is older than cached version
             if os.path.getmtime(filepath) < os.path.getmtime(cachepath):
                 # load cached version
-                cached_db = pickle.load(open(cachepath, 'rb'))
+                with open(cachepath, 'rb') as f:
+                    cached_db = pickle.load(f)
                 return cached_db
             else:
                 # DB newer than cached version --> delete cached file and return False