On Thu, Feb 19, 2009 at 4:39 PM, Saju Pillai <saju.pil...@gmail.com> wrote:
> LOhit wrote:
>>
>> Hello All,
>>
>> I am parsing a log file to extract data for the last one week from the
>> current date. The log file does not record the year, only month, day of the
>> month and time.
>>
>> My question is, the date is in "Month day-of-the-month time" format in the
>> log file (ex. "Nov 22 15:15:42") and the current date I get from "datetime"
>> module is in ISO format. How do I convert the date in log file to ISO
>> format(or any other format) and then compare with the current date/time.
>
> Look at time.strptime() or datetime.strptime().
>
> This method takes the string to be parsed and the format of the string.
>
> For eg:
>
> time_object = time.strptime("Nov 22 15:15:42", "%b %d %H:%M:%S")
>
> This will give you a time object on which you can call strftime(format,
> time_object) where format is any format you want.
>
> In your particular case, the year will default to 1900, you may want to
> explicitly supply the year like strptime("2008 Nov 22 15:15:42", "%Y %b %d
> %H:%M:%S").The time,datetime functions in Python have borrowed a lot in style and semantics from the C language and its time functions (in time.h) header file. For example, >>> import time >>> time.time() 1235042431.3961599 The "time" function mimics its counterpart "time(...)" in the C language. The difference being that in Python it returns both the integer and fractional parts, whereas in C only the integral time is returned. Both strftime and strptime are also derived from their counterparts in C namely "strftime" and "strptime" respectively and do similar jobs. "strftime" - literally means format a time structure to a string with "f" standing for "format". "strptime" - literally means parse a string representing time into a time structure with "p" standing for "parse". Sometimes an understanding of name and semantics of functions go a long way. Being someone who started programming with C (and still continues to do), I am fascinated by how much Python has borrowed from C, the time/datetime modules being perfect examples. Not just these functions, but almost the entire time/datetime functions mimic their C counterparts. --Anand > > > srp > -- > http://saju.net.in > _______________________________________________ > BangPypers mailing list > BangPypers@python.org > http://mail.python.org/mailman/listinfo/bangpypers > -- -Anand _______________________________________________ BangPypers mailing list BangPypers@python.org http://mail.python.org/mailman/listinfo/bangpypers
