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Groups > comp.lang.python > #62977

Re: need to print seconds from the epoch including the millisecond

From Grant Edwards <invalid@invalid.invalid>
Newsgroups comp.lang.python
Subject Re: need to print seconds from the epoch including the millisecond
Date 2014-01-02 16:23 +0000
Organization PANIX Public Access Internet and UNIX, NYC
Message-ID <la43pq$isp$1@reader1.panix.com> (permalink)
References <e0e7da6b-5cd9-4e6d-bcca-604bd4bd8d73@googlegroups.com> <mailman.4638.1388085731.18130.python-list@python.org> <59aa73ac-e06e-4c0e-83a4-147ac42cad2e@googlegroups.com> <52bcaeed$0$29995$c3e8da3$5496439d@news.astraweb.com>

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On 2013-12-26, Steven D'Aprano <steve+comp.lang.python@pearwood.info> wrote:
> matt.doolittle33@gmail.com wrote:
>
>> On Thursday, December 26, 2013 2:22:10 PM UTC-5, Dan Stromberg wrote:
>>> On Thu, Dec 26, 2013 at 10:32 AM,  <matt.doolittle33@gmail.com> wrote:
>>> 
>>> > i am using 2.7.   I need to print the time in seconds from the epoch
>>> > with millisecond precision.  i have tried many things but have failed. 
> [...]
>>> In [1]: import time
>>> In [2]: time.time()
>>> Out[2]: 1388085670.1567955
>>
>> 
>> OK i did what you said but I am only getting 2 decimal places.
>> Why is this and what can I do to get the millisecond?
>
> Please show *exactly* what you did. Also please tell us what operating
> system you are using. It may be that your operating system's clock doesn't
> provide millisecond precision.

AFAIK, that's irrelevent.  time.time() returns a float.  On all the
CPython implementations I know of, that is a 64-bit IEEE format, which
provides 16 decimal digits of precision regardless of the granularity
of the system time value.  At this point in time, that means 10 digits
left of the decimal point and 6 to the right.

-- 
Grant Edwards               grant.b.edwards        Yow! Will the third world
                                  at               war keep "Bosom Buddies"
                              gmail.com            off the air?

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Thread

need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-26 10:32 -0800
  Re: need to print seconds from the epoch including the millisecond Dan Stromberg <drsalists@gmail.com> - 2013-12-26 11:22 -0800
    Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-26 14:06 -0800
      Re: need to print seconds from the epoch including the millisecond Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-27 09:34 +1100
        Re: need to print seconds from the epoch including the millisecond Grant Edwards <invalid@invalid.invalid> - 2014-01-02 16:23 +0000
          Re: need to print seconds from the epoch including the millisecond Dave Angel <davea@davea.name> - 2014-01-02 21:41 -0500
            Re: need to print seconds from the epoch including the millisecond Grant Edwards <invalid@invalid.invalid> - 2014-01-03 15:33 +0000
              Re: need to print seconds from the epoch including the millisecond Chris Angelico <rosuav@gmail.com> - 2014-01-04 02:41 +1100
      Re: need to print seconds from the epoch including the millisecond Dave Angel <davea@davea.name> - 2013-12-26 17:48 -0500
      Re: need to print seconds from the epoch including the millisecond Terry Reedy <tjreedy@udel.edu> - 2013-12-26 20:03 -0500
      Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-26 20:29 -0500
        Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-27 07:43 -0800
      Re: need to print seconds from the epoch including the millisecond Dave Angel <davea@davea.name> - 2013-12-26 23:54 -0500
        Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-27 07:42 -0800
        Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-27 07:40 -0800
          Re: need to print seconds from the epoch including the millisecond Dave Angel <davea@davea.name> - 2013-12-27 11:20 -0500
          Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-27 11:27 -0500
            Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-27 10:09 -0800
              Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-27 13:50 -0500
                Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-27 13:53 -0500
                Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-27 20:15 -0500
              Re: need to print seconds from the epoch including the millisecond Ned Batchelder <ned@nedbatchelder.com> - 2013-12-27 13:49 -0500
                Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-30 04:16 -0800
                Re: need to print seconds from the epoch including the millisecond Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-30 14:14 +0000
                Re: need to print seconds from the epoch including the millisecond Cousin Stanley <cousinstanley@gmail.com> - 2013-12-30 10:07 -0700
                Re: need to print seconds from the epoch including the millisecond Mark Lawrence <breamoreboy@yahoo.co.uk> - 2013-12-30 17:35 +0000
                Re: need to print seconds from the epoch including the millisecond Cousin Stanley <cousinstanley@gmail.com> - 2013-12-30 11:17 -0700
                Re: need to print seconds from the epoch including the millisecond Steven D'Aprano <steve+comp.lang.python@pearwood.info> - 2013-12-31 05:57 +1100
          Re: need to print seconds from the epoch including the millisecond Dennis Lee Bieber <wlfraed@ix.netcom.com> - 2013-12-27 13:14 -0500
          Re: need to print seconds from the epoch including the millisecond Cameron Simpson <cs@zip.com.au> - 2013-12-28 11:25 +1100
            Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-29 18:44 -0800
              Re: need to print seconds from the epoch including the millisecond Ned Batchelder <ned@nedbatchelder.com> - 2013-12-30 07:50 -0500
                Re: need to print seconds from the epoch including the millisecond Roy Smith <roy@panix.com> - 2013-12-30 09:22 -0500
              Re: need to print seconds from the epoch including the millisecond Ned Batchelder <ned@nedbatchelder.com> - 2013-12-30 08:01 -0500
                Re: need to print seconds from the epoch including the millisecond matt.doolittle33@gmail.com - 2013-12-30 05:40 -0800
          Re: need to print seconds from the epoch including the millisecond Ned Batchelder <ned@nedbatchelder.com> - 2013-12-27 21:10 -0500
            Re: need to print seconds from the epoch including the millisecond Steven D'Aprano <steve@pearwood.info> - 2013-12-28 03:50 +0000

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