Examples
Series
import numpy as np
import pandas as pd
s = pd.Series([2, np.nan, 4, -3, 0])
s
By default, NA values are ignored.
s.cumprod()
To include NA values in the operation, use skipna=False
s.cumprod(skipna=False)
By default, iterates over rows and finds the product in each column. This is equivalent
to axis=None or axis='index'.