From d6b446de729abc94147b0b49ffaa08d00a32a878 Mon Sep 17 00:00:00 2001 From: Kovid Goyal Date: Tue, 18 Jan 2011 20:25:51 -0700 Subject: [PATCH] ... --- src/calibre/ebooks/conversion/preprocess.py | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/calibre/ebooks/conversion/preprocess.py b/src/calibre/ebooks/conversion/preprocess.py index 087d8ed486..f728bec52b 100644 --- a/src/calibre/ebooks/conversion/preprocess.py +++ b/src/calibre/ebooks/conversion/preprocess.py @@ -459,7 +459,7 @@ class HTMLPreProcessor(object): try: search_re = re.compile(search_pattern) replace_txt = getattr(self.extra_opts, replace, '') - if replace_txt == None: + if not replace_txt: replace_txt = '' rules.insert(0, (search_re, replace_txt)) except Exception as e: