The code below shows a way of teaching operator overloading in Python.
Even though the standard library includes a Fraction type, it can't hurt to recreate it in a lesson, drawing on our knowledge of how fractions should behave.
Notice the embedded _gcd() method employs Euclid's Method to reduce fractions to lowest terms on initialization. Since multiply and add operations, and their inverses, all end up creating new Q type instances (fractions), no attempt at reducing is made until then.
Hit the Run button to run the script. Output appears at the bottom.
Even though the standard library includes a Fraction type, it can't hurt to recreate it in a lesson, drawing on our knowledge of how fractions should behave.
Notice the embedded _gcd() method employs Euclid's Method to reduce fractions to lowest terms on initialization. Since multiply and add operations, and their inverses, all end up creating new Q type instances (fractions), no attempt at reducing is made until then.
Hit the Run button to run the script. Output appears at the bottom.
