如何生成具有2019年日期的两列，并且每个日期具有上午9点到晚上8点的时间段？

import datetime

start_date = datetime.datetime(2019, 1, 1)
end_date = datetime.datetime(2019, 12, 31)

dates = []
times = []

current_date = start_date
while current_date <= end_date:
    current_time = datetime.time(9)
    while current_time <= datetime.time(20):
        dates.append(current_date.strftime("%Y-%m-%d"))
        times.append(current_time.strftime("%H:%M:%S"))
        current_time = (datetime.datetime.combine(datetime.date.today(), current_time) + datetime.timedelta(hours=1)).time()
    current_date += datetime.timedelta(days=1)

# 打印生成的日期和时间
for i in range(len(dates)):
    print(dates[i], times[i])