python prompt isn't much of a development shell, use ipython it lets you type exit and if you turn on autocall (%autocall) it lets you run functions without par

python prompt isn't much of a development shell, use ipython it lets you type exit and if you turn on autocall (%autocall) it lets you run functions without parens(hint this isn't valid python). print isn't a statement in python 3 and range was never a statement