Pandas add one day to column

Question

I need to add 1 day to each date I want to get the begining date of the following month eg 2014-01-2014 for the 1st item in the dataframe. Tried:

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Answer 1

No need to turn into an index. Just using .apply() works:

df['newdate'] = pd.to_datetime(df['date']).apply(pd.DateOffset(1))