如何获得本周开始的DateTime？

import datetime

# 获取今天的日期
today = datetime.date.today()

# 计算本周开始的日期
week_start = today - datetime.timedelta(days=today.weekday())

# 将日期转换为DateTime
week_start_datetime = datetime.datetime.combine(week_start, datetime.datetime.min.time())

print(week_start_datetime)