Pandas DataFrame - expanding() function

Last update on August 19 2022 21:50:51 (UTC/GMT +8 hours)

DataFrame - expanding() function

The expanding() function is used to provide expanding transformations.

Syntax:

DataFrame.expanding(self, min_periods=1, center=False, axis=0)

Parameters:

Name	Description	Type/Default Value	Required / Optional
min_periods	Minimum number of observations in window required to have a value (otherwise result is NA).	int Default Value: 1	Required
center	Set the labels at the center of the window.	bool Default Value: False	Required
axis		int or str Default Value: 0	Required

Returns: a Window sub-classed for the particular operation

Notes:

By default, the result is set to the right edge of the window. This can be changed to the center of the window by setting center=True.

Example:

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