Ticket #11228: file.py.diff

django/db/models/fields/files.py

@@ -138 +138 @@
         # be restored later, by FileDescriptor below.
         return {'name': self.name, 'closed': False, '_committed': True, '_file': None}
 
+    def is_exists(self):
+        """
+        Verify if file exists on the file system and return True if exists.
+        """
+        return os.path.exists(self._get_path())
+
 class FileDescriptor(object):
     """
     The descriptor for the file attribute on the model instance. Returns a