import time

 #------->> 时间戳

 print(time.time())

 1525418832.2835853

 #------->>  结构化 时间

 print(time.localtime())

 print(time.gmtime())

 print(time.localtime().tm_mday)

 time.struct_time(tm_year=2018, tm_mon=5, tm_mday=4, tm_hour=15, tm_min=28, tm_sec=32, tm_wday=4, tm_yday=124, tm_isdst=0)

 time.struct_time(tm_year=2018, tm_mon=5, tm_mday=4, tm_hour=7, tm_min=28, tm_sec=32, tm_wday=4, tm_yday=124, tm_isdst=0)

 4

 #------->> 将结构化时间转成 时间戳

 print(time.mktime(time.localtime()))

 1525418978.0

 #------->> 将结构化时间 转成  字符串时间

 print( time.strftime("%Y-%m-%d %X",time.localtime()))  # 后面的时分秒可以用 %X简化写

 print( time.strftime("%Y-%m-%d %H:%M:%S",time.localtime()))

 2018-05-04 15:30:52

 2018-05-04 15:30:52

 #------->> 将 字符串时间 转成 结构化时间

 print(time.strptime("2018-5-4 16:10:9","%Y-%m-%d %X"))

time.struct_time(tm_year=2018, tm_mon=5, tm_mday=4, tm_hour=16, tm_min=10, tm_sec=9, tm_wday=4, tm_yday=124, tm_isdst=-1)

 print(time.asctime())

 print(time.ctime())

 Fri May  4 15:32:39 2018

 Fri May  4 15:32:39 2018

 import datetime

 print(datetime.datetime.now())

 2018-05-04 15:33:57.990908