Groups > comp.lang.python > #22020

Re: Accessing the files by last modified time

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From	Neil Cerutti <neilc@norwich.edu>
Newsgroups	comp.lang.python
Subject	Re: Accessing the files by last modified time
Date	22 Mar 2012 13:06:36 GMT
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On 2012-03-22, Tim Williams <tjandacw@cox.net> wrote:
> On Mar 22, 7:33?am, Sangeet <mrsang...@gmail.com> wrote:
>> Hi
>>
>> I am new to the python programming language.
>>
>> I've been trying to write a script that would access the last
>> modified file in one of my directories. I'm using Win XP.
>>
>> I saw a similar topic, on the forum before, however the reply
>> using (os.popen) didn't work out for me. I'm not sure whether
>> it was due to syntax errors either.
>>
>> Thanks,
>> Sangeet
>
> Check out os.stat()

I've been using os.path.getmtime, and converting that to a
datetime object using datetime.datetime.fromtimestamp.

Surprisingly, perhaps, this has been working.

According to the docs, to avoid making any assumptiong,  I might
need to do:

tm = os.path.getmtime(apath)
lt = time.localtime(tm)
datetime.datetime(lt.tm_year, lt.tm_mon, lt.tm_mday)

Here's where I'm confused about the functioning of my original
plan. The docs say:

 os.path.getmtime
 [...]  The return value is a number giving the number of seconds
 since the epoch (see the time module). [...]

 classmethod datetime.fromtimestamp
 Return the local date and time corresponding to the POSIX
 timestamp, such as returned by time.time(). [...]

 time.time
 Return the time as a floating point number expressed as seconds
 since the epoch, in UTC. [...]

I'm not completely sure the return type of getmtime and the
argument type of fromtimestamp are really the same or not. I
guess I came to that conclusion some time in the past, and it
does seem to work. It may be a simple case of just different
aspects the exact same type being being highlighted in each
definition.

-- 
Neil Cerutti

Thread

Accessing the files by last modified time Sangeet <mrsangeet@gmail.com> - 2012-03-22 04:33 -0700
  Re: Accessing the files by last modified time Chris Rebert <clp2@rebertia.com> - 2012-03-22 04:49 -0700
    Re: Accessing the files by last modified time Sangeet <mrsangeet@gmail.com> - 2012-03-23 06:00 -0700
    Re: Accessing the files by last modified time Sangeet <mrsangeet@gmail.com> - 2012-03-23 06:00 -0700
  Re: Accessing the files by last modified time Tim Williams <tjandacw@cox.net> - 2012-03-22 05:04 -0700
    Re: Accessing the files by last modified time Neil Cerutti <neilc@norwich.edu> - 2012-03-22 13:06 +0000
    Re: Accessing the files by last modified time Sangeet <mrsangeet@gmail.com> - 2012-03-23 05:59 -0700
  Re: Accessing the files by last modified time Peter Otten <__peter__@web.de> - 2012-03-22 13:38 +0100

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