python获取时间及时间格式转换问题实例代码详解

import datetime, time
\'\'\'获取当前时间\'\'\'
n = datetime.datetime.now()
print(n)
\'\'\'获取10位时间戳\'\'\'
now = time.time()
print(int(now))
\'\'\'获取13位时间戳\'\'\'
now2 = round(now*1000)
print(now2)

\'\'\'将时间戳转换成指定的时间格式\'\'\'
t = time.localtime(int(now))
dt = time.strftime(\"%Y-%m-%d %H:%M:%S\", t)
dt2 = time.strftime(\"%Y%m%d %H:%M:%S\", t)
dt3 = time.strftime(\"%Y/%m/%d %H:%M:%S\", t)
print(dt)
print(dt2)
print(dt3)

\'\'\'随意设置时间格式\'\'\'
ndt = n.strftime(\"%Y--%m--%d %H:%M:%S\")
ndt2 = n.strftime(\"%Y%m%d %H:%M:%S\")
ndt3 = n.strftime(\"%Y**%m**%d %H:%M:%S\")
print(ndt)
print(ndt2)
print(ndt3)

a = \'20111111 15:00:00\'
\'\'\'将字符串转换成datetime类型,只能转换类型，不能改变时间格式\'\'\'
b = datetime.datetime.strptime(a, \"%Y%m%d %H:%M:%S\")
print(b)
\'\'\'转换成datetime之后可以随意改变时间格式\'\'\'
b2 = b.strftime(\"%Y**%m**%d %H:%M:%S\")
print(b2)
\'\'\'将datetime类型转换成字符串\'\'\'
c1 = b.strftime(\"%Y%m%d\")
c2 = b.strftime(\"%H%M%S\")
print(c1, c2)