pandas / 0.25.0 / reference / api / pandas.dataframe.ffill.html /

pandas.DataFrame.ffill

DataFrame.ffill(self, axis=None, inplace=False, limit=None, downcast=None) [source]

Synonym for DataFrame.fillna() with method='ffill'.

Returns:
%(klass)s

Object with missing values filled.

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https://pandas.pydata.org/pandas-docs/version/0.25.0/reference/api/pandas.DataFrame.ffill.html