bach.DataFrame.sort_values

sort_values​

(by, ascending=True)

​[source]

Create a new DataFrame with the specified sorting order.

This does not modify the current DataFrame, instead it returns a new DataFrame.

The sorting will remain in the returned DataFrame as long as no operations are performed on that frame that materially change the selected data. Operations that materially change the selected data are for example groupby(), merge(), materialize(), and filtering out rows. Adding or removing a column does not materially change the selected data.

Parameters​

  • by (Union[str, List[str]]) – column label or list of labels to sort by.
  • ascending (Union[bool, List[bool]]) – Whether to sort ascending (True) or descending (False). If this is a list, then the by must also be a list and len(ascending) == len(by).

Returns​

a new DataFrame with the specified ordering.

Return type​

bach.dataframe.DataFrame