From b0c95d4e6197269a47c5870cdc0cc6a48f48bb3f Mon Sep 17 00:00:00 2001 From: Kovid Goyal Date: Thu, 11 Aug 2022 08:30:35 +0530 Subject: [PATCH] Fix #1984847 [[Deprecated] FutureWarning epub_output.py](https://bugs.launchpad.net/calibre/+bug/1984847) --- src/calibre/ebooks/conversion/plugins/epub_output.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/calibre/ebooks/conversion/plugins/epub_output.py b/src/calibre/ebooks/conversion/plugins/epub_output.py index a7f20f7e3b..bcf93728e4 100644 --- a/src/calibre/ebooks/conversion/plugins/epub_output.py +++ b/src/calibre/ebooks/conversion/plugins/epub_output.py @@ -299,7 +299,7 @@ class EPUBOutput(OutputFormatPlugin): from calibre.ebooks.oeb.polish.upgrade import epub_2_to_3 existing_nav = getattr(self.opts, 'epub3_nav_parsed', None) nav_href = getattr(self.opts, 'epub3_nav_href', None) - previous_nav = (nav_href, existing_nav) if existing_nav and nav_href else None + previous_nav = (nav_href, existing_nav) if existing_nav is not None and nav_href else None epub_2_to_3(container, self.log.info, previous_nav=previous_nav) fix_conversion_titlepage_links_in_nav(container) container.commit()