toastermain/settings: Avoid python filehandle closure warnings

Switch to using with blocks when accessing files to ensure file
descriptors are closed and avoid python warnings.

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 6 insertions, 3 deletions

diff --git a/lib/toaster/toastermain/settings.py b/lib/toaster/toastermain/settings.py
index 3c1235936..e06adc5a9 100644
--- a/lib/toaster/toastermain/settings.py
+++ b/lib/toaster/toastermain/settings.py
@@ -89,14 +89,17 @@ else:
                 from pytz.exceptions import UnknownTimeZoneError
                 try:
                     if pytz.timezone(zonename) is not None:
-                        zonefilelist[hashlib.md5(open(filepath, 'rb').read()).hexdigest()] = zonename
+                        with open(filepath, 'rb') as f:
+                            zonefilelist[hashlib.md5(f.read()).hexdigest()] = zonename
                 except UnknownTimeZoneError as ValueError:
                     # we expect timezone failures here, just move over
                     pass
             except ImportError:
-                zonefilelist[hashlib.md5(open(filepath, 'rb').read()).hexdigest()] = zonename
+                with open(filepath, 'rb') as f:
+                    zonefilelist[hashlib.md5(f.read()).hexdigest()] = zonename
 
-    TIME_ZONE = zonefilelist[hashlib.md5(open('/etc/localtime', 'rb').read()).hexdigest()]
+    with open('/etc/localtime', 'rb') as f:
+        TIME_ZONE = zonefilelist[hashlib.md5(f.read()).hexdigest()]
 
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