只要生成月份和日期，不要年份，生成一个从三月十五到十月二十的序列

你可以使用与上面类似的方法，只是要修改一下日期的格式。下面是一个例子，生成从3月15日到10月20日的日期序列：

from datetime import datetime, timedelta

start_date = datetime.strptime('03-15', '%m-%d')
end_date = datetime.strptime('10-20', '%m-%d')

date_list = []
while start_date <= end_date:
    date_list.append(start_date.strftime('%m-%d'))
    start_date += timedelta(days=1)

print(date_list)

输出结果为：

['03-15', '03-16', '03-17', '03-18', '03-19', '03-20', '03-21', '03-22', '03-23', '03-24', '03-25', '03-26', '03-27', '03-28', '03-29', '03-30', '03-31', '04-01', '04-02', '04-03', '04-04', '04-05', '04-06', '04-07', '04-08', '04-09', '04-10', '04-11', '04-12', '04-13', '04-14', '04-15', '04-16', '04-17', '04-18', '04-19', '04-20', '04-21', '04-22', '04-23', '04-24', '04-25', '04-26', '04-27', '04-28', '04-29', '04-30', '05-01', '05-02', '05-03', '05-04', '05-05', '05-06', '05-07', '05-08', '05-09', '05-10', '05-11', '05-12', '05-13', '05-14', '05-15', '05-16', '05-17', '05-18', '05-19', '05-20', '05-21', '05-22', '05-23', '05-24', '05-25', '05-26', '05-27', '05-28', '05-29', '05-30', '05-31', '06-01', '06-02', '06-03', '06-04', '06-05', '06-06', '06-07', '06-08', '06-09', '06-10', '06-11', '06-12', '06-13', '06-14', '06-15', '06-16', '06-17', '06-18', '06-19', '06-20', '06-21', '06-22', '06-23', '06-24', '06-25', '06-26', '06-27', '06-28', '06-29', '06-30', '07-01', '07-02', '07-03', '07-04', '07-05', '07-06', '07-07', '07-08', '07-09', '07-10', '07-11', '07-12', '07-13', '07-14', '07-15', '07-16', '07-17', '07-18', '07-19', '07-20', '07-21', '07-22', '07-23', '07-24', '07-25', '07-26', '07-27', '07-28', '07-29', '07-30', '07-31', '08-01', '08-02', '08-03', '08-04', '08-05', '08-06', '08-07', '08-08', '08-09', '08-10', '08-11', '08-12', '08-13', '08-14', '08-15', '08-16', '08-17', '08-18', '08-19', '08-20', '08-21', '08-22', '08-23', '08-24', '08-25', '08-26', '08-27', '08-28', '08-29', '08-30', '08-31', '09-01', '09-02', '09-03', '09-04', '09-05', '09-06', '09-07', '09-08', '09-09', '09-10', '09-11', '09-12', '09-13', '09-14', '09-15', '09-16', '09-17', '09-18', '09-19', '09-20', '09-21', '09-22', '09-23', '09-24', '09-25', '09-26', '09-27', '09-28', '09-29', '09-30', '10-01', '10-02', '10-03', '10-04', '10-05', '10-06', '10-07', '10-08', '10-09', '10-10', '10-11', '10-12', '10-13', '10-14', '10-15', '10-16', '10-17', '10-18', '10-19', '10-20']