Convert SAS Dates Format in a loop

[scidam]

Try something like this instead:

def convert_sas_dates(df, field, inplace=False, unit='s'):
    """Converts sas-formated column to standard.
    """
    if inplace:
        df.loc[:, field] = pd.to_timedelta(df.loc[:, field]) + pd.datetime(1960, 1, 1)
    else:
        df_ = df.copy()
        df_.loc[:, field] = pd.to_timedelta(df_.loc[:, field], unit=unit) + pd.datetime(1960,1,1)
        return df_