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# pandas.core.window.expanding.Expanding.rank

Expanding.rank(method='average', ascending=True, pct=False, numeric_only=False)

  Calculate the expanding rank.

  Added in version 1.4.0.

  Parameters:
    method{‘average’, ‘min’, ‘max’}, default ‘average’

      How to rank the group of records that have the same value (i.e. ties):

      - average: average rank of the group

      - min: lowest rank in the group

      - max: highest rank in the group

    ascendingbool, default True

      Whether or not the elements should be ranked in ascending order.

    pctbool, default False

      Whether or not to display the returned rankings in percentile form.

    numeric_onlybool, default False

      Include only float, int, boolean columns.

      Added in version 1.5.0.

  Returns:
    Series or DataFrame

      Return type is the same as the original object with `np.float64` dtype.

  See also

  `pandas.Series.expanding`

    Calling expanding with Series data.

  `pandas.DataFrame.expanding`

    Calling expanding with DataFrames.

  `pandas.Series.rank`

    Aggregating rank for Series.

  `pandas.DataFrame.rank`

    Aggregating rank for DataFrame.

  Examples

      >>> s = pd.Series([1, 4, 2, 3, 5, 3])
      >>> s.expanding().rank()
      0    1.0
      1    2.0
      2    2.0
      3    3.0
      4    5.0
      5    3.5
      dtype: float64

      >>> s.expanding().rank(method="max")
      0    1.0
      1    2.0
      2    2.0
      3    3.0
      4    5.0
      5    4.0
      dtype: float64

      >>> s.expanding().rank(method="min")
      0    1.0
      1    2.0
      2    2.0
      3    3.0
      4    5.0
      5    3.0
      dtype: float64