Adding a column of rowsums across a list of columns in Spark Dataframe

Question

I have a Spark dataframe with several columns. I want to add a column on to the dataframe that is a sum of a certain number of the columns.

For example, my data l

Answer 1

Here's an elegant solution using python:

NewDF = OldDF.withColumn('sums', sum(OldDF[col] for col in OldDF.columns[1:]))

Hopefully this will influence something similar in Spark ... anyone?.