Merged requested to merge bitbucket/merged-pr-649 into branch/default
Created originally on Bitbucket by Bystroushaak (Lishaak Bystroushaak)
Was already merged in Bitbucket before import, marked as merged by the import user
.closed property which allows you to check whether
RFile instance is closed without the need to use
_check_closed() which raises
ValueError if the file is closed.