Programming Iteration

• The purpose of a trace table is so the programmer can check the proram to see if what they've written works behind what's being outputted.
• A loop is an instruction that repeats itself until some condition is met.
• To use a trace table, write down all possible inputs (in this case, any combination of two numbers), then work out the outputs by following the steps of the algorithm.
• The while statement executes the body of code as long as a specified condition remains true
• A for loop is used to repeat a set of instructions a set number of times.
• When using range, there are three variables that can be inputted: the start, the stop, and the step.

  The start: tells the program what number to start from.

  The stop: tells the program what number to stop at however, it stops one number before that.

  The step: tells the program how much to increment the count by.
• ValueError is when the program acknowledges the mistake of using the wrong data type in the code but stops the code running as a reult of the error.