Use with when opening files

content.py

@@ -995,11 +995,8 @@ def saveMediaInFormPOST(mediaBytes, debug: bool,
             if os.path.isfile(possibleOtherFormat):
                 os.remove(possibleOtherFormat)
 
-    fd = open(filename, 'wb')
-    if not fd:
-        return None, None
-    fd.write(mediaBytes[startPos:])
-    fd.close()
+    with open(filename, 'wb') as fp:
+        fp.write(mediaBytes[startPos:])
 
     if not os.path.isfile(filename):
         print('WARN: Media file could not be written to file: ' + filename)

posts.py

@@ -1348,11 +1348,9 @@ def getPinnedPostAsJson(baseDir: str, httpPrefix: str,
     pinnedPostJson = {}
     actor = httpPrefix + '://' + domainFull + '/users/' + nickname
     if os.path.isfile(pinnedFilename):
-        pinFile = open(pinnedFilename, "r")
         pinnedContent = None
-        if pinFile:
+        with open(pinnedFilename, "r") as pinFile:
             pinnedContent = pinFile.read()
-            pinFile.close()
         if pinnedContent:
             pinnedPostJson = {
                 'atomUri': actor + '/pinned',