use with syntax for file IO

addon.xml

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
 <addon id="script.xbmcbackup"
-    name="Backup" version="1.7.3~beta1" provider-name="robweber">
+    name="Backup" version="1.7.3" provider-name="robweber">
   <requires>
     <import addon="xbmc.python" version="3.0.0"/>
     <import addon="script.module.dateutil" version="2.8.0" />
@@ -24,7 +24,7 @@
 		<screenshot>resources/images/screenshot3.jpg</screenshot>
 		<screenshot>resources/images/screenshot4.jpg</screenshot>
     </assets>
-    <news>Version 1.7.2
+    <news>Version 1.7.3
 additional strptime modifications to fix scheduler behavior
 </news>
     <summary lang="ar_SA">إنسخ إحتياطياً قاعده بيانات إكس بى إم سى وملفات اﻹعدادات فى حاله وقوع إنهيار مع إمكانيه اﻹسترجاع</summary>

changelog.md

@@ -4,7 +4,7 @@ All notable changes to this project will be documented in this file.
 
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/)
 
-## [Version 1.7.3~beta1]
+## [Version 1.7.3](https://github.com/robweber/xbmcbackup/compare/matrix-1.7.1...robweber:matrix-1.7.3)
 
 ### Fixed
 

resources/lib/authorizers.py

@@ -135,25 +135,22 @@ class DropboxAuthorizer:
 
     def _setToken(self, token):
         # write the token files
-        token_file = open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE), 'w')
-
-        token_file.write(json.dumps({"access_token": token.access_token, "refresh_token": token.refresh_token, "expiration": str(token.expires_at)}))
-        token_file.close()
+        with open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE), 'w') as token_file:
+            token_file.write(json.dumps({"access_token": token.access_token, "refresh_token": token.refresh_token, "expiration": str(token.expires_at)}))
 
     def _getToken(self):
         result = {}
         # get token, if it exists
         if(xbmcvfs.exists(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))):
-            token_file = open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE))
-            token = token_file.read()
+            token = ""
+            with open(xbmcvfs.translatePath(utils.data_dir() + self.TOKEN_FILE), 'r') as token_file:
+                token = token_file.read()
 
             if(token.strip() != ""):
                 result = json.loads(token)
                 # convert expiration back to a datetime object
                 result['expiration'] = patch_strptime(result['expiration'], "%Y-%m-%d %H:%M:%S.%f")
 
-            token_file.close()
-
         return result
 
     def _deleteToken(self):