fixes for missing isbn

zvoronz · Mar 8, 2018 · 72b2c82 · 72b2c82
1 parent 2a69160
commit 72b2c82
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/safaribooks.py b/safaribooks.py
@@ -863,7 +863,7 @@ def create_content_opf(self):
  for sub in self.book_info["subjects"])
 
  return self.CONTENT_OPF.format(
- (self.book_info["isbn"] if len(self.book_info["isbn"]) else self.book_id),
+ (self.book_info["isbn"] if (isinstance(self.book_info["isbn"], str) and len(self.book_info["isbn"])) else self.book_id),
  escape(self.book_title),
  authors,
  escape(self.book_info["description"]),
@@ -918,7 +918,7 @@ def create_toc(self):
 
  navmap, _, max_depth = self.parse_toc(response)
  return self.TOC_NCX.format(
- (self.book_info["isbn"] if len(self.book_info["isbn"]) else self.book_id),
+ (self.book_info["isbn"] if (isinstance(self.book_info["isbn"], str) and len(self.book_info["isbn"])) else self.book_id),
  max_depth,
  self.book_title,
  ", ".join(aut["name"] for aut in self.book_info["authors"]),