# pandas.Series.last

`Series.``last`(offset)

  Convenience method for subsetting final periods of time series data based on a date offset.

  Parameters: | offset : string, DateOffset, dateutil.relativedelta
  Returns: | subset : same type as caller

  Raises:

  TypeError

  > If the index is not a `DatetimeIndex`

  See also

  `first`
    Select initial periods of time series based on a date offset.
  `at_time`
    Select values at a particular time of the day.
  `between_time`
    Select values between particular times of the day.

  Examples

      >>> i = pd.date_range('2018-04-09', periods=4, freq='2D')
      >>> ts = pd.DataFrame({'A': [1,2,3,4]}, index=i)
      >>> ts
                  A
      2018-04-09  1
      2018-04-11  2
      2018-04-13  3
      2018-04-15  4

  Get the rows for the last 3 days:

      >>> ts.last('3D')
                  A
      2018-04-13  3
      2018-04-15  4

  Notice the data for 3 last calender days were returned, not the last 3 observed days in the dataset, and therefore data for 2018-04-11 was not returned.

Scroll To Top