calendarGraph2

def date_generator(from_date,to_date):
    while from_date<=to_date:
        yield from_date
        from_date = from_date + dt.timedelta(days=1)
        
# create a new df with 2 columns
# col1 : Title, col2: DateRead
Title = []
Date = []
for index,row in booksv2.iterrows():
    date_temp = list(date_generator(row['Start'],row['End']))
    title_temp = [row['Title']]*len(date_temp)
    print(date_temp,title_temp)
    Title += title_temp
    Date += date_temp

booksv2 = pd.DataFrame(np.array([Title,Date]),index=['Title','Date']).T