The Big Book of Small Python Projects

#64 Seven-Segment Display Module

A seven-segment display is a type of LCD component used to display numbers in pocket calculators, microwave ovens, and other small electronic devices. Through different combinations of seven line-shaped segments in an LCD, a seven-segment display can represent the digits 0 through 9. They look like this:

   __         __    __          __    __   __    __    __
  |  |    |   __|   __|  |__|  |__   |__     |  |__|  |__|
  |__|    |  |__    __|     |   __|  |__|    |  |__|   __|

The benefit of this program is that other programs can import it as a module. Project 14, “Countdown,” and Project 19, “Digital Clock,” import the sevseg.py file so they can use its getSevSegStr() function. ...