Re: Problem with plpython

Steve Erickson wrote:
> I'm running PostgreSQL 8.3 with pl/python 8.3. I am getting a
> different date/time format when executing the below examples. The
> results are the same whether I use os.popen or os.system. In
> plpython, I run:
> import os
> cmd = 'ls -al /var/log/messages > /var/tmp/log'
> x = os.popen(cmd)
> for aline in x.readlines():
> plpy.notice('aline = %s', aline)
>
> and the contents of /var/tmp/log are "-rw-r----- 1 syslog adm 495523
> Oct 30 11:52 /var/log/messages
>
> When, within Python, I run:
> >>> cmd = 'ls -al /var/log/messages > /var/tmp/log'
> >>> x = os.popen(cmd)
> >>> for aline in x.readlines():
> ... print aline
>
> the contents of /var/tmp/log are "-rw-r----- 1 syslog adm 23591
> 2009-10-30 13:03 /var/log/messages
>
> How, using plpython, can I get the output date/time in the same format
> as when executing from within python itself?

Different locale settings will produce different formatting for the ls
command. For example...

[justinp(at)justinp /tmp/test]$ LANG=en_US.UTF-8 ls -l
total 0
-rw-rw-r-- 1 justinp justinp 0 2009-10-30 17:32 aa
-rw-rw-r-- 1 justinp justinp 0 2009-10-30 17:32 bb
-rw-rw-r-- 1 justinp justinp 0 2009-10-30 17:32 cc

[justinp(at)justinp /tmp/test]$ LANG=C ls -l
total 0
-rw-rw-r-- 1 justinp justinp 0 Oct 30 17:32 aa
-rw-rw-r-- 1 justinp justinp 0 Oct 30 17:32 bb
-rw-rw-r-- 1 justinp justinp 0 Oct 30 17:32 cc

It seems to me that you can just override the LANG variable directly in
your call to ls, since it's just running a shell command.

--
Justin Pasher