pandas.DataFrame.std

DataFrame.std(axis=0, skipna=True, level=None, ddof=1)

Return standard deviation over requested axis. NA/null values are excluded

axis : {0, 1}

0 for row-wise, 1 for column-wise

skipna : boolean, default True

Exclude NA/null values. If an entire row/column is NA, the result will be NA

level : int, default None

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

std : Series (or DataFrame if level specified)

Normalized by N-1 (unbiased estimator).