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Exercise

Basic while loop

Below you can find the example from the video where the error variable, initially equal to 50.0, is divided by 4 and printed out on every run:

error = 50.0
while error > 1 :
    error = error / 4
    print(error)

This example will come in handy, because it's time to build a while loop yourself! We're going to code a while loop that implements a very basic control system for a reverted pendulum. If there's an offset from standing perfectly straight, the while loop will incrementally fix this offset.

Instructions

100 XP
  • Create the variable offset with an initial value of 8.
  • Code a while loop that keeps running as long as offset is not equal to 0. Inside the while loop:
    • Print out the sentence "correcting...".
    • Next, decrease the value of offset by 1. You can do this with offset = offset - 1.
    • Finally, print out offset so you can see how it changes.