pandas.DataFrame.update

DataFrame.update(other, join='left', overwrite=True, filter_func=None, raise_conflict=False)

Modify DataFrame in place using non-NA values from passed DataFrame. Aligns on indices

other : DataFrame, or object coercible into a DataFrame join : {‘left’, ‘right’, ‘outer’, ‘inner’}, default ‘left’ overwrite : boolean, default True

If True then overwrite values for common keys in the calling frame

filter_func : callable(1d-array) -> 1d-array<boolean>, default None

Can choose to replace values other than NA. Return True for values that should be updated

raise_conflict : bool

If True, will raise an error if the DataFrame and other both contain data in the same place.