60,61c60,65
< m = SequenceMatcher(a=old, b=new, autojunk=False)
<
---
> try:
> m = SequenceMatcher(a=old, b=new, autojunk=False)
> except TypeError:
> # autojunk was introduced in Python 2.7. We need a fallback
> # mechanism to support old Python versions.
> m = SequenceMatcher(a=old, b=new)