Why is the compiler package discontinued in Python 3?
To provide specific references to the decision trail:
And, for what it's worth, I started Python3 port of the compiler package, to be maintained outside of the stdlib:
For what it's worth, I started a port of the compiler package to Python3: https://github.com/pfalcon/python-compiler . At the time of writing, it generates bytecode compatible with CPython3.5, and can compiler entire standard library of that version.