python 日期

>>> import datetime
>>> print datetime.datetime.now()
2019-07-11 14:24:01.954000

>>> print datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")
2019-07-11 14:25:33
>>> print datetime.datetime.now().strftime("%Y%m%d")
20190711
>>> print datetime.datetime.now().strftime("%Y-%m-%d %H:%M")
2019-07-11 14:25

>>> print (datetime.datetime.now()+datetime.timedelta(minutes=1)).strftime("%Y-%m-%d %H:%M:%S")
2019-07-11 14:29:46

>>> print (datetime.datetime.now()+datetime.timedelta(minutes=-1)).strftime("%Y-%m-%d %H:%M:%S")
2019-07-11 14:29:32

>>> print (datetime.datetime.now()+datetime.timedelta(days=1)).strftime("%Y-%m-%d %H:%M:%S")
2019-07-12 14:32:37

>>> print (datetime.datetime.now()+datetime.timedelta(hours=1)).strftime("%Y-%m-%d %H:%M:%S")
2019-07-11 15:33:37

strTime = ‘2019-07-11 11:03‘  # 给定一个时间，此是个字符串
startTime = datetime.datetime.strptime(strTime, "%Y-%m-%d %H:%M")  # 把strTime转化为时间格式,后面的秒位自动补位的
print startTime
print startTime.strftime("%Y-%m-%d %H:%M")  # 格式化输出，保持和给定格式一致
# startTime时间加 一分钟
startTime2 = (startTime + datetime.timedelta(minutes=2)).strftime("%Y-%m-%d %H:%M")
print startTime2

2019-07-11 11:03:00
2019-07-11 11:03
2019-07-11 11:05

Process finished with exit code 0

startTime = ‘2019-07-11 23:30:00‘  # 输入一个时间，此是个字符串
# endTime = ‘2019-07-11 15:35‘
for i in range(3):
    endTime = (datetime.datetime.strptime(startTime, "%Y-%m-%d %H:%M:%S") + datetime.timedelta(
        days=1)).strftime("%Y-%m-%d %H:%M:%S")
    print startTime,endTime
    startTime = endTime

# 参数days=1（天+1） 可以换成 minutes=1（分钟+1）、seconds=1（秒+1）

2019-07-11 23:30:00 2019-07-12 23:30:00
2019-07-12 23:30:00 2019-07-13 23:30:00
2019-07-13 23:30:00 2019-07-14 23:30:00

Process finished with exit code 0