Python common modules-time modules

Python common modules-time modules

Yun Zhengjie

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I. Initial TIME module

1 #! /usr/bin/env python2 #_*_coding:utf-8_*_3 #@author: Yinzhengjie4 #blog:http://www.cnblogs.com/yinzhengjie/tag/python%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e4%b9%8b% e8%b7%af/5 #Email:[email protected]6 7 Import Time8 9 """"Ten categories of modules: One Module Essence is a "*.py" file, broadly divided into the following three categories: A 1>: A built-in module that refers to a module that exists inside a Python interpreter, such as a time module; - 2>> third-party module, refers to the installation of Python after the Lib folder module; - 3>. Custom module, refers to the Python program you write yourself; the """ -  - Print(Time.time ())#returns the current timestamp, representing the number of seconds from January 1, 1971 "00:00:00" to the time node of the moment.  -  +s = Time.localtime ()#creates a time object, or, in the structured time object, returns the Struct_time object format for the local time.  - Print(s) + Print(s.tm_year)#gets the year.  A Print(S.tm_mon)#gets the month.  at  -S2 = Time.gmtime ()#returns the Struc Time Object format for UTC time.  - Print(S2) -  -  -  in  - #The result of the above code execution is as follows: to1520176127.9244497 +Time.struct_time (tm_year=2018, tm_mon=3, tm_mday=4, tm_hour=23, Tm_min=8, tm_sec=47, tm_wday=6, tm_yday=63, tm_isdst=0) -2018 the3 *Time.struct_time (tm_year=2018, tm_mon=3, tm_mday=4, tm_hour=15, Tm_min=8, tm_sec=47, tm_wday=6, tm_yday=63, tm_isdst=0 )

Two. Conversion of time modules to each other

1. Converting a mnemonic chart

2. Case Show

1 #! /usr/bin/env python2 #_*_coding:utf-8_*_3 #@author: Yinzhengjie4 #blog:http://www.cnblogs.com/yinzhengjie/tag/python%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e4%b9%8b% e8%b7%af/5 #Email:[email protected]6 7 Import Time8 9s = time.localtime (31245244545)#a structured time object that converts a timestamp to a structured time. Ten Print(s) One  AS2 = Time.mktime (Time.localtime ())#converts a structured time into a timestamp.  - Print(S2) -  theS3 = Time.strftime ("%y-%m-%d", Time.localtime ())#converts a structured time into a string time.  - Print(S3) -  -S4 = Time.strptime ("1993:05:19","%y:%m:%d")#converts a string time into a structured time.  + Print(S4) -  +  A  at #The result of the above code execution is as follows: -Time.struct_time (tm_year=2960, tm_mon=2, tm_mday=15, tm_hour=2, tm_min=35, tm_sec=45, tm_wday=4, tm_yday=46, tm_isdst=0) -1520176194.0 -2018-03-04 -Time.struct_time (tm_year=1993, tm_mon=5, tm_mday=19, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=2, tm_yday=139, tm_isdst=- 1)

Three. Time expansion

1 #! /usr/bin/env python2 #_*_coding:utf-8_*_3 #@author: Yinzhengjie4 #blog:http://www.cnblogs.com/yinzhengjie/tag/python%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e4%b9%8b% e8%b7%af/5 #Email:[email protected]6 7 8 Import Time9 Print(Time.asctime (Time.localtime ()))#converts a structured time into a string time. Ten Print(Time.ctime (565656446))#converts a timestamp into a string time.  One  ATime.sleep (2)#lets the program pause for 2 seconds to simulate I/O blocking without consuming CPU resources.  -  -  the  -  - #The result of the above code execution is as follows: -Sun Mar 4 23:11:16 2018 +Sat Dec 5 06:47:26 1987

Four. Time module small test sledgehammer

1 #! /usr/bin/env python2 #_*_coding:utf-8_*_3 #@author: Yinzhengjie4 #blog:http://www.cnblogs.com/yinzhengjie/tag/python%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e4%b9%8b% e8%b7%af/5 #Email:[email protected]6 7 Import Time8 9s ="2018-03-04"Ten  One defChangetime (string,number,format="%y-%m-%d"): AStructtime =time.strptime (String,format) -     Print(structtime) -Stamptime =time.mktime (structtime) the     Print(stamptime) -Newstamp = stamptime + 3600 * 24 * Number -Newstringtime =time.strftime (format, Time.localtime (Newstamp)) -     Print(newstringtime) +  -Changetime (s,3)#Estimated time after 3rd +  A  at  -  - #The result of the above code execution is as follows: -Time.struct_time (tm_year=2018, tm_mon=3, tm_mday=4, tm_hour=0, tm_min=0, tm_sec=0, tm_wday=6, tm_yday=63, Tm_isdst=-1) -1520092800.0 -2018-03-07

Five. DateTime INTRODUCTION

1 #! /usr/bin/env python2 #_*_coding:utf-8_*_3 #@author: Yinzhengjie4 #blog:http://www.cnblogs.com/yinzhengjie/tag/python%e8%87%aa%e5%8a%a8%e5%8c%96%e8%bf%90%e7%bb%b4%e4%b9%8b% e8%b7%af/5 #Email:[email protected]6 ImportTime,datetime7 8 Print(Datetime.datetime.now ())#Print current system time9 Ten Print(Datetime.date.fromtimestamp (Time.time ()))#The timestamp is converted directly into a date format such as: 2018-03-04 One  A Print(Datetime.datetime.now () + Datetime.timedelta (3))#Current time + 3 days -  - Print(Datetime.datetime.now () + Datetime.timedelta (-3))#Current Time-3 days the  - Print(Datetime.datetime.now () + Datetime.timedelta (hours=3))#Current time + 3 hours -  - Print(Datetime.datetime.now () + Datetime.timedelta (minutes=30))#current time +30 minutes +  -C_time =Datetime.datetime.now () + Print(C_time.replace (minute=3,hour=2))##时间替换 A  at  -  -  - #The result of the above code execution is as follows: -2018-03-04 23:12:13.477416 -2018-03-04 in2018-03-07 23:12:13.477416 -2018-03-01 23:12:13.477416 to2018-03-05 02:12:13.477416 +2018-03-04 23:42:13.477416 -2018-03-04 02:03:13.477416

Python common modules-time modules