Python time conversion implementation code between various languages, python code

Python time conversion implementation code between various languages, python code

Basic knowledge

Millisecond
Microsecond microseconds
Nanosecond nanoseconds
1 second = 1000 milliseconds 1 millisecond = 1000 microseconds 1 microsecond = 1000 nanoseconds

2 perl

In perl, time or localtime can be used to obtain the time. time returns the number of seconds from, January 1, January 1, 1970. localtime returns the string representation of the current time, or tuple representation of the year, month, and day.

#!/usr/bin/perluse strict;use warnings;use POSIX qw(strftime);# seconds from 1970.01.01 00:00:00my $ti = time();print $ti;print "\n";print strftime("%Y-%m-%d %H:%M:%S\n", localtime($ti));#1310623469#2011-07-14 14:03:58my $t = localtime();print $t;print "\n";#Thu Jul 14 12:25:16 2011my ($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst)=localtime();print $year;print "\n";#111print strftime("%Y-%m-%d %H:%M:%S\n", localtime());#2011-07-14 12:26:01

C #
1 tick= 100 nanosecond

using System;using System.Collections.Generic;using System.Linq;using System.Text;namespace MyTest{  class Program  {    static void DateTimeTest()    {      DateTime dt2 = DateTime.Now;      Console.WriteLine(dt2.Ticks);      Console.WriteLine(dt2.ToString("MM/dd/yyyy hh:mm:ss"));    }    static DateTime? ConvertPerlTimeToDateTime(string perltime)    {      DateTime? dt = null;      //perl time variable : seconds from 1970.01.01 00:00:00       string sdt = perltime;      long ldt = 0;      if (long.TryParse(sdt, out ldt))      {        long ldt2 = new DateTime(1970, 1, 1).Ticks + ldt * 1000 * 1000 * 10;         dt = new DateTime(ldt2, DateTimeKind.Local);        Console.WriteLine(dt.Value.ToString("MM/dd/yyyy hh:mm:ss"));      }      return dt;    }    static void Main(string[] args)    {      DateTimeTest();      ConvertPerlTimeToDateTime("1309423883");      //634462479788396720      //07/14/2011 01:46:18      //06/30/2011 08:51:23    }  }}

4. python

Similar to perl in python, time is also the number of seconds since January 1, January 1, 1970.

import timeISOTIMEFORMAT='%Y-%m-%d %X'# seconds from 1970.01.01 00:00:00t = time.time()print (t)print time.strftime(ISOTIMEFORMAT,time.localtime(t))#1310623143.12#2011-07-14 13:59:03(year,mon,day,hour,min,sec,wday,yday,isdst) = time.localtime()print (year)print (time.strftime(ISOTIMEFORMAT, time.localtime()))#2011#2011-07-14 13:59:03