将缺少的日期添加到Pandas中的时间序列ID

import pandas as pd

# 创建一个时间序列ID
start_date = '2022-01-01'
end_date = '2022-01-10'
index = pd.date_range(start=start_date, end=end_date)

# 打印时间序列ID
print(index)

DatetimeIndex(['2022-01-01', '2022-01-02', '2022-01-03', '2022-01-04',
               '2022-01-05', '2022-01-06', '2022-01-07', '2022-01-08',
               '2022-01-09', '2022-01-10'],
              dtype='datetime64[ns]', freq='D')