. The current
will give you a nice tab and lined up stuff, but otherwise, if you don't know how to use it, you will simply get confused. The error has something to do with
- which is not a number. If this is a string (I'm not familiar with this module) and you wish to print it, then switch that last 'd' in your
line to 's'. 'd' specifies a digit and that variable doesn't seem to be a number, hence the error.