dask.dataframe.Series.add

Series.add(other, level=None, fill_value=None, axis=0)

Return Addition of series and other, element-wise (binary operator add).

This docstring was copied from pandas.core.series.Series.add.

Some inconsistencies with the Dask version may exist.

Equivalent to series + other, but with support to substitute a fill_value for missing data in either one of the inputs.

Parameters
otherSeries or scalar value
fill_valueNone or float value, default None (NaN)

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.

levelint or name

Broadcast across a level, matching Index values on the passed MultiIndex level.

Returns
Series

The result of the operation.

See also

Series.radd

Reverse of the Addition 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.add(b, fill_value=0)  
a    2.0
b    1.0
c    1.0
d    1.0
e    NaN
dtype: float64