# Warnings

class agate.NullCalculationWarning

  Warning raised if a calculation which can not logically account for null values is performed on a `Column` containing nulls.

class agate.DuplicateColumnWarning

  Warning raised if multiple columns with the same name are added to a new `Table`.

agate.warn_null_calculation(operation, column)

agate.warn_duplicate_column(column_name, column_rename)