mypy

Author: tabatkins

bikeshed/h/serializer.py

@@ -141,7 +141,7 @@ def startTag(self, tag: str, el: Nodes, write: WriterFn) -> None:
             if attrVal == "":
                 strs.append(" " + self.unfuckName(str(attrName)))
             elif attrName == "class" and " " in attrVal:
-                sortedClasses = " ".join(sorted([x for x in attrVal.split(r" ") if x]))
+                sortedClasses = " ".join(sorted([x for x in str(attrVal).split(r" ") if x]))
                 strs.append(f' class="{sortedClasses}"')
             else:
                 strs.append(" " + self.unfuckName(str(attrName)) + '="' + dom.escapeAttr(str(attrVal)) + '"')