pandas.core.groupby.Grouper

A Grouper allows the user to specify a groupby instruction for a target object

This specification will select a column via the key parameter, or if the level and/or axis parameters are given, a level of the index of the target object.

If axis and/or level are passed as keywords to both Grouper and groupby, the values passed to Grouper take precedence.

param key

string, defaults to None

groupby key, which selects the grouping column of the target

param level

name/number, defaults to None

the level for the target index

param freq

string / frequency object, defaults to None

This will groupby the specified frequency if the target selection (via key or level) is a datetime-like object. For full specification of available frequencies, please see here.

param axis

number/name of the axis, defaults to 0

param sort

boolean, default to False

whether to sort the resulting labels

param closed

{‘left’ or ‘right’}

Closed end of interval. Only when freq parameter is passed.

param label

{‘left’ or ‘right’}

Interval boundary to use for labeling. Only when freq parameter is passed.

param convention

{‘start’, ‘end’, ‘e’, ‘s’}

If grouper is PeriodIndex and freq parameter is passed.

param base

int, default 0

Only when freq parameter is passed.

param loffset

string, DateOffset, timedelta object

Only when freq parameter is passed.

return

A specification for a groupby instruction

Warning

This feature is currently unsupported by Intel Scalable Dataframe Compiler