pandas.DataFrame.combine_first¶
-
DataFrame.
combine_first
(other)[source]¶ Combine two DataFrame objects and default to non-null values in frame calling the method. Result index columns will be the union of the respective indexes and columns
Parameters: other : DataFrame Returns: combined : DataFrame See also
DataFrame.combine
- Perform series-wise operation on two DataFrames using a given function
Examples
df1’s values prioritized, use values from df2 to fill holes:
>>> df1 = pd.DataFrame([[1, np.nan]]) >>> df2 = pd.DataFrame([[3, 4]]) >>> df1.combine_first(df2) 0 1 0 1 4.0