Merge branch 'fix/syntax-python3-20170305' into travis

# Conflicts:
#	cps/epub.py
#	cps/web.py

cps/epub.py

@@ -41,6 +41,11 @@ def get_epub_info(tmp_file_path, original_file_name, original_file_extension):
     p = tree.xpath('/pkg:package/pkg:metadata', namespaces=ns)[0]
 
     epub_metadata = {}
+    try:#maybe description isn't present
+        comments = tree.xpath("//*[local-name() = 'description']/text()")[0]
+        epub_metadata['comments'] = comments
+    except IndexError as e:
+        epub_metadata['comments'] = ""
 
     for s in ['title', 'description', 'creator', 'language']:
         tmp = p.xpath('dc:%s/text()' % s, namespaces=ns)
@@ -66,6 +71,8 @@ def get_epub_info(tmp_file_path, original_file_name, original_file_extension):
             epub_metadata['language'] = isoLanguages.get(part3=lang).name
         else:
             epub_metadata['language'] = ""
+    except IndexError as e:
+        epub_metadata['language'] = ""
 
     coversection = tree.xpath("/pkg:package/pkg:manifest/pkg:item[@id='cover-image']/@href", namespaces=ns)
     coverfile = None