how to remove brackets within a list

[wavic]

awesome thank you! I guess that is a great way of fixing why the else statement did not work in compute grade section =)

else doesn't matter. Once gerMark() is called and if the input is incorrect it will throw an error and program is going to exit with an error message. It's always better to handle the inputs in place. Else is used if the input is out of range. But I am talking about if one enter something like 'GGBG' instead of numerical input