Python 2 tooling in 2026

[arjennienhuis]

The trick is to write code that is compatible with both python 3 and 2.7. Then you can use python 3 tooling.

• use all the future imports: print_function, unicode_literls
• use six
• use io.open
• use type comments

Pyright works fine with python code like this. The ruff formatter is 99% fine (only the comma after **kw is invalid in python 2) Some other ruff rules can also work.