[Tutor] build list of non-empty variables

[Don Jennings]

Hi, folks.

>From within a class, I want to return a string with data from non-empty
variables in a class.

I could create a list of all the variables and then iterate over them,
dropping the ones which are empty, then join() and return them; however, I
am guessing there is another way to get that list of variables or to
accomplish my goal. Suggestions?

Thanks!
Don
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