pandas.Series.ptp

Series.ptp(axis=None, skipna=None, level=None, numeric_only=None, **kwargs) [source]
Returns the difference between the maximum value and the
minimum value in the object. This is the equivalent of the numpy.ndarray method ptp.
Parameters:
axis : {index (0)}

skipna : boolean, default True

Exclude NA/null values when computing the result.

level : int or level name, default None

If the axis is a MultiIndex (hierarchical), count along a particular level, collapsing into a scalar

numeric_only : boolean, default None

Include only float, int, boolean columns. If None, will attempt to use everything, then use only numeric data. Not implemented for Series.

Returns:
ptp : scalar or Series (if level specified)

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https://pandas.pydata.org/pandas-docs/version/0.23.4/generated/pandas.Series.ptp.html