在Python中格式子数据集中的日期时间

from datetime import datetime

dt = datetime(2022, 3, 21, 12, 30, 0)
print(dt)  # 输出：2022-03-21 12:30:00

from datetime import date

d = date(2022, 3, 21)
print(d)  # 输出：2022-03-21

from datetime import time

t = time(12, 30, 0)
print(t)  # 输出：12:30:00

from datetime import timedelta

delta = timedelta(days=7)
new_date = date(2022, 3, 21) + delta
print(new_date)  # 输出：2022-03-28

from datetime import datetime

dt = datetime(2022, 3, 21, 12, 30, 0)
formatted = dt.strftime("%Y-%m-%d %H:%M:%S")
print(formatted)  # 输出：2022-03-21 12:30:00

from datetime import datetime

str_date = "2022-03-21 12:30:00"
parsed = datetime.strptime(str_date, "%Y-%m-%d %H:%M:%S")
print(parsed)  # 输出：2022-03-21 12:30:00