Thank you for pointing that out.

My explanation was incorrect.

In reality, the issue was that the values returned as a result of the following `Group By` query were in uppercase, causing them to mismatch with the matching data prepared on the Python side.

SELECT revenutype, sum(total) from xxx group by revenuetype

# Revenue types and their row positions in RevenueByRevenueType
REVENUE_ROWS = {
   ‘License’:      5,
   ‘Maintenance’:  6,
   ‘Subscription’: 7,
   ‘Training’:     8,
}