pandas.Series.cumprod

Series.cumprod(axis=0, skipna=True, *args, **kwargs)

Return cumulative product over a Series.

Returns a Series of the same size containing the cumulative product.

Parameters:

axis{0 or ‘index’}, default 0

This parameter is unused and defaults to 0.

skipnabool, default True

Exclude NA/null values. If entire Series is NA, the result will be NA.

*args, **kwargs

Additional keywords have no effect but might be accepted for compatibility with NumPy.

Returns:

Series

Return cumulative product of Series.

See also

core.window.expanding.Expanding.prod

Similar functionality but ignores NaN values.

Series.prod

Return the product over Series.

Series.cummax

Return cumulative maximum.

Series.cummin

Return cumulative minimum.

Series.cumsum

Return cumulative sum.

Examples

>>> s = pd.Series([2, np.nan, 5, -1, 0])
>>> s
0    2.0
1    NaN
2    5.0
3   -1.0
4    0.0
dtype: float64

By default, NA values are ignored.

>>> s.cumprod()
0     2.0
1     NaN
2    10.0
3   -10.0
4    -0.0
dtype: float64

To include NA values in the operation, use skipna=False

>>> s.cumprod(skipna=False)
0    2.0
1    NaN
2    NaN
3    NaN
4    NaN
dtype: float64