
Discover when a feature was added to Python
I made a tool to discover when a feature was added to Python.
It's online here and on PyPI as sincewhen.
You can look up a feature by name or paste code to look up all the features within it (that only works for code written using modern Python syntax).
That page shows some example feature story arcs that can be discovered with this.
I made this primarily as a teaching tool so I can better answer questions from my Python-learning students with a bit more historical context.
Note: I feel this qualifies more as a "resource" than a "showcase". I'm embracing EAFP over LBYL and hoping for the best. Call me out of I'm wrong here.