A Fruitful Function is A function that yields a return value. incremental development. A program development plan intended to avoid debugging by adding and testing only a small amount of code at a time. None. A special Python value returned by functions that have no return statement, or a return statement.

What we did here was testing Fermat’s Last Theorem using pythagorean theorem a^2+b^2=c^2  using this formula to prove that Femat’s Last Theorem was both right and wrong by putting our own random integer values and then later on have our function do raw input, in having the user put in his/her own integer values and have a string message display saying Fermat’s Last Theorem was either right or wrong based on the integers they put in for the raw in put for a,b,c,n.