Filling date gaps in pandas dataframe
问题 I have Pandas DataFrame (loaded from .csv) with Date-time as index.. where there is/have-to-be one entry per day. The problem is that I have gaps i.e. there is days for which I have no data at all. What is the easiest way to insert rows (days) in the gaps ? Also is there a way to control what is inserted in the columns as data ! Say 0 OR copy the prev day info OR to fill sliding increasing/decreasing values in the range from prev-date toward next-date data-values. thanks Here is example 01-03