Detecting Binary content in files

[ritu]

Hi,

I'm wondering if Python has a utility to detect binary content in
files? Or if anyone has any ideas on how that can be accomplished? I
haven't been able to find any useful information to accomplish this
(my other option is to fire off a perl script from within m python
script that will tell me whether the file is binary), so any pointers
will be appreciated.

Thanks,
Ritu
--
http://mail.python.org/mailman/listinfo/python-list

Re: Detecting Binary content in files

[ritu]

On Mar 31, 10:19 am, Josh Dukes  wrote:
> There might be another way but off the top of my head:
>
> #!/usr/bin/env python
>
> def isbin(filename):
>    fd=open(filename,'rb')
>    for b in fd.read():
>        if ord(b) > 127:
>            fd.close()
>            return True
>    fd.close()
>    return False
>
> for f in ['/bin/bash', '/etc/passwd']:
>    print "%s is binary: " % f, isbin(f)
>
> Of course this would detect unicode files as being binary and maybe
> that's not what you want. How are you thinking about doing it in
> perl exactly?

With perl, I'm thinking of doing something like the below:

if ( ( -B $filename ||
   $filename =~ /\.pdf$/ ) &&
 -s $filename > 0 ) {
return(1);
}

So my isbin method should return a true for any file that isn't
entirely ASCII text, so I guess for my purposes classifying a unicode
file as a 'binary' would be alright. Thanks much for your response.

>
> On Tue, 31 Mar 2009 09:23:05 -0700 (PDT)
>
> ritu  wrote:
> > Hi,
>
> > I'm wondering if Python has a utility to detect binary content in
> > files? Or if anyone has any ideas on how that can be accomplished? I
> > haven't been able to find any useful information to accomplish this
> > (my other option is to fire off a perl script from within m python
> > script that will tell me whether the file is binary), so any pointers
> > will be appreciated.
>
> > Thanks,
> > Ritu
> > --
> >http://mail.python.org/mailman/listinfo/python-list
>
> --
>
> Josh Dukes
> MicroVu IT Department

--
http://mail.python.org/mailman/listinfo/python-list

Query

[ritu sharma]

Hi ,

I am using linked server to fetch data from Oracle database.

Now ,I have to use  FPN_STATUS='A'  in the query. Kindly tell me if there is
an escape sequence for  ' .

FROM OPENQUERY(FPDWH,
 'SELECT
  WGFP_OWN.GRS_FILE_PLAN_VERSION.FVN_STATUS FPN_STAT_CODE,
   WGFP_OWN.GRS_FILE_PLAN_STATUS.FPS_NAME FPN_STAT_NAME,
   WGFP_OWN.GRS_FILE_PLAN_VERSION.FVN_STAT_UPD_BY FPN_STAT_UPD_BY,

 FROM
   WGFP_OWN.GRS_FILE_PLAN_VERSION,
   WGFP_OWN.GRS_FILE_PLAN,
   WGFP_OWN.GRS_FILE_PLAN_STATUS,
   WGFP_OWN.GRS_SECTOR,
  (SELECT A.FVN_FPN_ID AS FPN_NO, A.FVN_ID AS FVN_ID
FROM WGFP_OWN.GRS_FILE_PLAN_VERSION A, WGFP_OWN.GRS_FILE_PLAN B
  WHERE B.FPN_ID = A.FVN_FPN_ID
  AND A.FVN_VERSION=1
  AND (A.FVN_FPN_ID) NOT IN
 (SELECT C.FVN_FPN_ID AS FPN_NO_A
   FROM WGFP_OWN.GRS_FILE_PLAN_VERSION C, WGFP_OWN.GRS_FILE_PLAN D
   WHERE D.FPN_ID = C.FVN_FPN_ID
   AND C.FVN_STATUS ='A')
   UNION
   SELECT A.FVN_FPN_ID AS FPN_NO, A.FVN_ID AS FVN_ID
FROM WGFP_OWN.GRS_FILE_PLAN_VERSION A, WGFP_OWN.GRS_FILE_PLAN B
 WHERE B.FPN_ID = A.FVN_FPN_ID
 AND *A.FVN_STATUS ='A' --- Any alternative for ' character
*--GROUP BY A.FVN_FPN_ID
) FVN_MAX

Now ,I have to use  FPN_STATUS='A'  in the query. Kindly tell me if there is
an escape sequence for  ' .

Hoping for an early reply.


 *Thanks *
*Ritu ***
-- 
http://mail.python.org/mailman/listinfo/python-list