Python allows free creation of plots, unlike expensive, stagnant graphing calculators. Import NumPy and Matplotlib for basic linear and polynomial plots in Python. Seaborn lets you make ...

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.

Interested in learning Python? Jack Wallen takes you through your first steps in building a simple application to take user input and write it to a file.