1. 常用操作
from datetime import datetime
aa = datetime.now()
print(aa) # datetime.datetime(2021, 9, 24, 16, 28, 11, 984000)
print(str(aa)) # '2021-9-24 16:28:11.984000'
bb = datetime.strptime(str(aa),"%Y-%m-%d %H:%M:%S.%f")
# 输出 datetime.datetime(2017, 10, 9, 16, 28, 11, 984000)
2. 字符串格式转换datetime日期格式
aa = datetime.datetime.strptime('2017-10-11', '%Y-%m-%d')
# datetime.datetime(2017, 10, 11, 0, 0)
3. datetime日期格式转换成字符串
today = datetime.datetime.now()
now = datetime.datetime.strftime(today, '%Y-%m-%d')
# '2017-10-12'
4. 计算两个日期相差的天数、秒数
from datetime import datetime
aa = datetime.now()
time.sleep(100)
bb = datetime.now()
(bb-aa).days
(bb-aa).seconds
(bb-aa).total_seconds
5. 多加一天、一小时、一分钟
# 多加一天
a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
# '2021-10-12 15:52:09'
b = (datetime.datetime.now()+datetime.timedelta(days=1)).strftime('%Y-%m-%d %H:
# '2021-10-13 15:52:15'
# 多加一小时
a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
# '2021-10-12 15:50:54'
b = (datetime.datetime.now()+datetime.timedelta(hours=1)).strftime('%Y-%m-%d %H
# '2021-10-12 16:50:56'
# 多加一分钟
a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
# '2017-10-12 15:54:13'
b = (datetime.datetime.now()+datetime.timedelta(minutes=1)).strftime('%Y-%m-%d %H:%M:%S')
# '2017-10-12 15:55:30'
