Calculator apps and handheld calculators are clunky, but Python's interactive mode easily recalls previous results for calculations. You can also scroll through and search input.

SymPy operates on symbols the way a numeric calculator or regular Python program works on numbers. For graphing, NumPy offers a more concise way of defining equations, similar to how you'd work ...

Graphing calculators have always been a fun way to get started with programming, though mostly in the form of games and cheat sheets. But now Texas Instruments is introducing a new TI-84 graphing ...