python的time模块

 #encoding=utf-8
 import time

 # 返回时间戳
 print time.time()

 # 延迟运行单位为s,如下为延迟3s
 time.sleep(3)

 # 转换时间戳为时间元组（时间对象）,自1970+second,其second为秒数
 print time.gmtime(4)

 # 转换时间戳为本地对象
 print time.localtime()

 # 将时间戳转换为字符串
 print time.asctime(time.localtime())

 # 将时间戳转换为字符串
 print time.ctime(5)

 # 将本地时间转换为时间戳
 t = (2009, 2, 17, 17, 3, 38, 1, 48, 0)
 print time.mktime(t)

 # 将时间对象转换为规范性字符串（常用）,格式如下
 '''
 %Y Year with century as a decimal number.
 %m Month as a decimal number [01,12].
 %d Day of the month as a decimal number [01,31].
 %H Hour (24-hour clock) as a decimal number [00,23].
 %M Minute as a decimal number [00,59].
 %S Second as a decimal number [00,61].
 %z Time zone offset from UTC.
 %a Locale's abbreviated weekday name.
 %A Locale's full weekday name.
 %b Locale's abbreviated month name.
 %B Locale's full month name.
 %c Locale's appropriate date and time representation.
 %I Hour (12-hour clock) as a decimal number [01,12].
 %p Locale's equivalent of either AM or PM.
 '''
 print time.strftime('%Y-%m-%d %H-%M-%S',t)

 # 将时间字符串根据指定的格式化符转换成数组形式的时间
 struct_time = time.strptime("30 Nov 00", "%d %b %y")
 print struct_time