pyspark.pandas.Series.expanding¶
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Series.expanding(min_periods: int = 1) → Expanding[FrameLike]¶ Provide expanding transformations.
Note
‘min_periods’ in pandas-on-Spark works as a fixed window size unlike pandas. Unlike pandas, NA is also counted as the period. This might be changed soon.
- Parameters
- min_periods: int, default 1
Minimum number of observations in window required to have a value (otherwise result is NA).
- Returns
- a Window sub-classed for the operation