eliminate null values from a dynamo string

[s.rostagno]

Bye to all,

in dynamo I read an excel file and get a list for each line read. Successively I convert lists into strings, what I can't do is delete null values in lists or strings.

Can you advise me?

Thank you.

 

[terri87]

I don't know how much you want to delete the null values, maybe you want to replace them with a string that identifies that field has no information (e.g. nodata)
you still have the option to choose what you want most. I'll attach the screenshot of the two knots that do your case