python time

time（time library,datetime library,panda.Timestamp()）

import time

获得当前时间

1	time.time() #获得当前timestamp

time.localtime(timestamp)

得到一个struct_time
time.struct_time(tm_year=2018…)

将struct time转换成string

Convert a tuple or struct_time representing a time as returned by gmtime() or localtime() to a string as specified by the format argument.If t is not provided,the current time as returned by localtime() is used.

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import time
time.strftime(format,t)        #将一个struct_time表示为一个格式化字符串
time.strftime("%Y-%m-%d %H:%M:%S",time.localtime())

将一个string类型的事件转换成struct time

Parse a string representing a time accroding to a format.The return value is a struct_time as returned by gmtime() or localtime()

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import time
time.strptime("a string representing a time","a format")    #将某个format表示的time转化为一个struct_time()
time.strptime("2014-02-01 00:00:00","%Y-%m-%d %H:%M:%S")

time.mktime()

将时间t转换成timestamp