What's the best way to update a dataset and write it back to template parameters?

[PGriffith]

The trick is to create a new list of values in one operation, then use our system functions to slice off the old column and drop in a new one. See this thread for a possible approach:

Can I modify an entire column from a dataset with system.dataset.setValue()?

def mapColumn(function, dataset, column): if isinstance(column, basestring): column = dataset.getColumnIndex(column) columnData = map(function, dataset.getColumnAsList(column)) columnsToKeep = range(dataset.columnCount) columnsToKeep.pop(column) dsWithoutColumn = system.dataset.filterColumns(dataset, columnsToKeep) return system.dataset.addColumn( dsWithoutColumn, column, columnData, dataset.getColumnName(column), dataset.getColumnType(column) ) It's relatively easy to…