From 6c9a85c3878b16e26bb492b0d3c0a5939b6be6f3 Mon Sep 17 00:00:00 2001
From: Willem Melching <willem.melching@gmail.com>
Date: Fri, 15 May 2020 15:21:05 -0700
Subject: [PATCH] fix resourcewarning

---
 rednose/helpers/__init__.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/rednose/helpers/__init__.py b/rednose/helpers/__init__.py
index 0634321..1588a43 100644
--- a/rednose/helpers/__init__.py
+++ b/rednose/helpers/__init__.py
@@ -15,7 +15,9 @@ def write_code(folder, name, code, header):
 def load_code(folder, name):
   shared_fn = os.path.join(folder, f"lib{name}.so")
   header_fn = os.path.join(folder, f"{name}.h")
-  header = open(header_fn).read()
+
+  with open(header_fn) as f:
+    header = f.read()
 
   ffi = FFI()
   ffi.cdef(header)