Minimal binary diff & version control in Python?

[Kevin Ar18]

This is a two part question:
 
1. Is there a minimal binary diff comparison library for Python (like difflib, but able to create a minimal diff)?

2. Has anyone ever tried to implement some form of version control in Python (if so, where)?
 
I was just wonder about creating something small to handle version control on binary files -- maybe something in Python.  :)
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