Python Module--time and datetime

Time-related operations, time is represented in three ways:

• Timestamp after January 1, 1970 seconds, i.e.: Time.time ()
• Formatted string 2014-11-11 11:11, i.e.: Time.strftime ('%y-%m-%d ')
• Structured time tuples include: year, day, week, etc. time.struct_time is: time.localtime ()

Time Module

Import Timeprint (Time.time ())   #输出1495018452.927428print (Time.ctime ())  #输出Wed May 17 18:54:48 2017, current system time # Struct_time Object Print (Time.gmtime ()) #输出time. Struct_time (tm_year=2017, tm_mon=5, tm_mday=17, tm_hour=11, tm_min=0, tm_ sec=56, tm_wday=2, tm_yday=137, tm_isdst=0) #注意: The time of Gmtime is UTC, or Greenwich Mean time. After 8, it is Beijing time (East eight district). LocalTime is the time in this time zone. Print (Time.localtime ()) #输出time. Struct_time (tm_year=2017, tm_mon=5, tm_mday=17, tm_hour=19, tm_min=11, tm_sec=28, tm_ wday=2, tm_yday=137, tm_isdst=0) time_obj = Time.gmtime () print ("{0}-{1}-{2}". Format (Time_obj.tm_year, time_obj.tm_ Mon, Time_obj.tm_mday)) print (Time.mktime (Time.localtime ()))  #struct_time对象转为时间戳time. Sleep (3)   #程序延迟3秒, Then proceed to print (Time.strftime ('%y-%m-%d%h:%m:%s ', Time.localtime ()))  #将struct_time格式转成指定的字符串格式print ( Time.strptime ("2010-5-18 15:06", "%y-%m-%d%h:%m"))    #将字符串格式转化成struct_time格式

　　

DateTime module

Import Datetimeimport Timeprint (Datetime.date.today ()) #输出2017 -05-17print (Datetime.date.fromtimestamp () ))  #输出2017-05-17, convert timestamp to date format Current_time =datetime.datetime.now () print (current_time)    #输出2017-05-17 22:03:40.630623print (Current_time.timetuple ())  #返回strunt_time格式print (Current_time.replace (2015, 9, 10)) # Replaces the specified portion of the current time print (Datetime.datetime.now () + Datetime.timedelta (days=10))  #比现在加10天print (Datetime.datetime.now () + Datetime.timedelta (days=-10)) #比现在减10天print (Datetime.datetime.now () + Datetime.timedelta (hours=10)) # 10 hours more than now print (Datetime.datetime.now () + Datetime.timedelta (seconds=10)) #比现在加10秒print (Datetime.datetime.strptime ( ' 21/11/06 16:03 ', '%d/%m/%y%h:%m ')  #将字符串转为时间

　　

Python Module--time and datetime