Series.combine_first(other) [source]
Combine Series values, choosing the calling Series’s values first. Result index will be the union of the two indexes
| Parameters: | other : Series |
|---|---|
| Returns: | y : Series |
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Licensed under the 3-clause BSD License.
http://pandas.pydata.org/pandas-docs/version/0.19.2/generated/pandas.Series.combine_first.html