computations.Percent seems like it would be a good addition

[palewire]

Unless I'm missing it, right now you have to do something like this loop through a table and add a new calculated column with a percentage value.

table = table.compute([
    ('percent', agate.Formula(agate.Number(), lambda row: row['count']/total))
])

To me something roughly like this might be nicer:

total = 100
table = table.compute(('percent', agate.Percent('count', total))

Crazy? If you like the idea, I'd be happy to take a stab at contributing it.

[onyxfish]

Looks good to me! It would be cool if total defaulted to None and in that case it ran a Sum and used the total of the column.

[palewire]

Okay. I will take a run at it.