Select: Filter rows using a callable predicate¶
- class txf.Select(source, inputs, predicate)¶
The
Select
transform filters rows based on a predicate.- inputs: tuple(str) or str¶
The columns to use in the predicate. They will not be dropped from the output.
- predicate: callable¶
A
callable
implementing the predicate. It will be given the values of inputs as positional arguments in the given order. the result will be treated as a Boolean.
Usage¶
Select(p, 'Sales', lambda sales: sales > 0)