Fix #1984847 [[Deprecated] FutureWarning epub_output.py](https://bugs.launchpad.net/calibre/+bug/1984847)

This commit is contained in:
Kovid Goyal 2022-08-11 08:30:35 +05:30
parent b56b524a78
commit b0c95d4e61
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@ -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()