ColumnGroups¶

class astropy.table.ColumnGroups(parent_column, indices=None, keys=None)[source]¶

Bases: BaseGroups

Attributes Summary

`indices`
`keys`

Methods Summary

`aggregate`(func)
`filter`(func)	Filter groups in the Column based on evaluating function `func` on each group sub-table.

Attributes Documentation

Methods Documentation

filter(func)[source]¶

Filter groups in the Column based on evaluating function func on each group sub-table.

The function which is passed to this method must accept one argument:

It must then return either True or False. As an example, the following will select all column groups with only positive values:

def all_positive(column):
    if np.any(column < 0):
        return False
    return True

Parameters:

Returns: