Specifying a time from previous day

[jrup]

David,

Thanks very much for the ideas and examples! I'll study this closely.

Jim R

"David Rushby" <woodsplitter at rocketmail.com> wrote in message
news:7876a8ea.0204141521.1f6570ed at posting.google.com...
> "jrup" <jrup at mail.com> wrote:
> > I need to search some log files, but only if they were created after
4:00pm
> > the previous day.
> >
> > I've looked at the python time module and its documentation, and have
> > skimmed mxDateTime documentation. I'm using activestate python 2.1.1 and
> > would like to stay with it's native library since it's the one
sanctioned by
> > our senior nt person (also not sure how it would interact with the
> > activestate install, or I'd try it).
> >
> > Can someone please point me in the right direction? Is this doable using
the
> > time module? I haven't had much luck figuring it out, yet.
>
>   It's certainly "doable" using the time module (see below), but
> since:
>
> a) the time module is rather low-level
> b) mxDateTime is freely available, and high-level
> c) you're a self-described newbie
>
>   , why confuse yourself by using the time module?
>
>   I see no reason why installing the eGenix.com mx Base Package would
> harm an installation of Activestate Python.
>
>   An mxDateTime-based example appears below (with equivalent code
> based on the time module also present, but commented out):
> ----------------------------------------------------------------
> import glob, os
> import mx.DateTime as dt
> # import time
>
> beginningOfToday = dt.today()
> eightHours = dt.DateTimeDelta(0, 8)
>
> # beginningOfToday = time.mktime(list(time.localtime()[:3])
> #    + [-1] + [0] * 5)
> # eightHours = 60*60 * 8
>
> minTime = beginningOfToday - eightHours
> minTimeAsTicks = minTime.ticks()
> print 'Will process all log files modified at or later than', minTime
>
> # minTimeAsTicks = beginningOfToday - eightHours
> # print 'Will process all log files modified at or later than',
> # print time.asctime(time.localtime(minTimeAsTicks))
>
> # logFilenamePattern could be input as a command-line
> # argument using sys.argv
> logFilenamePattern = r'c:\temp\*.txt'
> logFilenames = glob.glob(logFilenamePattern)
>
> # Build a list of relevant log filenames, including only the names of
> # files that have been modified at or later than minTimeAsTicks.
> relevantLogFilenames = [
>     logFilename
>     for logFilename in logFilenames
>     if os.stat(logFilename)[8] >= minTimeAsTicks
>   ]
>
> for logFilename in relevantLogFilenames:
>     logFile = open(logFilename)
>
>     print 'processing %s...' % logFilename
>     # Do some processing here.
>
>     logFile.close()