Series.
multiply
Return Multiplication of series and other, element-wise (binary operator mul).
Equivalent to series * other, but with support to substitute a fill_value for missing data in either one of the inputs.
series * other
Fill existing missing (NaN) values, and any new element needed for successful Series alignment, with this value before computation. If data in both corresponding Series locations is missing the result of filling (at that location) will be missing.
Broadcast across a level, matching Index values on the passed MultiIndex level.
The result of the operation.
See also
Series.rmul
Reverse of the Multiplication operator, see Python documentation for more details.
Examples
>>> a = pd.Series([1, 1, 1, np.nan], index=['a', 'b', 'c', 'd']) >>> a a 1.0 b 1.0 c 1.0 d NaN dtype: float64 >>> b = pd.Series([1, np.nan, 1, np.nan], index=['a', 'b', 'd', 'e']) >>> b a 1.0 b NaN d 1.0 e NaN dtype: float64 >>> a.multiply(b, fill_value=0) a 1.0 b 0.0 c 0.0 d 0.0 e NaN dtype: float64