pandas.api.typing.Resampler.size — pandas 3.0.0rc0+48.gc16f4591ee documentation (original) (raw)

final Resampler.size()[source]#

Compute group sizes.

Returns:

Series

Number of rows in each group.

See also

Series.groupby

Apply a function groupby to a Series.

DataFrame.groupby

Apply a function groupby to each row or column of a DataFrame.

Examples

ser = pd.Series( ... [1, 2, 3], ... index=pd.DatetimeIndex(["2023-01-01", "2023-01-15", "2023-02-01"]), ... ) ser 2023-01-01 1 2023-01-15 2 2023-02-01 3 dtype: int64 ser.resample("MS").size() 2023-01-01 2 2023-02-01 1 Freq: MS, dtype: int64