The shortcut key for commenting and uncommenting in Spyder is Ctrl + 1 (Click Ctrl and 1 simultaneously). For both Python shell and IPython shell, they have command history through the arrow key.

Python 3.13: Better interactive shell and finally multithreading without GIL The new Python release features an interactive command line and allows the global interpreter lock to be deactivated.

Coconut, a newly developed open source dialect of Python, provides new syntax for using features found in functional languages like Haskell and Scala.