From 80154837bfa1f6efd1ef17af346454f7458cf062 Mon Sep 17 00:00:00 2001 From: Kovid Goyal Date: Sat, 2 Aug 2014 20:51:28 +0530 Subject: [PATCH] Handle null values in mi.tags when formatting the tags field --- src/calibre/ebooks/metadata/book/base.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/calibre/ebooks/metadata/book/base.py b/src/calibre/ebooks/metadata/book/base.py index 1c66835b07..ed2ad1b1ee 100644 --- a/src/calibre/ebooks/metadata/book/base.py +++ b/src/calibre/ebooks/metadata/book/base.py @@ -677,7 +677,7 @@ class Metadata(object): elif datatype == 'text' and fmeta['is_multiple']: if isinstance(res, dict): res = [k + ':' + v for k,v in res.items()] - res = fmeta['is_multiple']['list_to_ui'].join(sorted(res, key=sort_key)) + res = fmeta['is_multiple']['list_to_ui'].join(sorted(filter(None, res), key=sort_key)) elif datatype == 'series' and series_with_index: res = res + ' [%s]'%self.format_series_index() elif datatype == 'datetime':