Calculator math.sqrt

[ichabod801]

Well, you need to add a new choice, with a new print after line 24 and a change to the text in line 26. Then you need a ways to distinguish binary operators from unary operators, and only has for a second number if the operator is binary. I would make a list of the choices for binary operators, and add an if statement to check that before line 28. Then you need a new elif for the new choice, right after line 36. That should do it.