Fixed #14749 -- added support for using Django's file object as context managers. Thanks to Florian Apolloner for the patch.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14671 bcc190cf-cafb-0310-a4f2-bffc1f526a37

django/core/files/base.py

@@ -101,6 +101,12 @@ class File(FileProxyMixin):
         if buffer_ is not None:
             yield buffer_
 
+    def __enter__(self):
+        return self
+
+    def __exit__(self, exc_type, exc_value, tb):
+        self.close()
+
     def open(self, mode=None):
         if not self.closed:
             self.seek(0)