zlib.decompress cannot, gunzip can

[enrio@online.no]

I have a string which I try to decompress:

body = zlib.decompress (body)

but I get

zlib.error: Error -3 while decompressing data: incorrect header check

However, I can write the string to a file and run gunzip with the
expected results:

f = open('/tmp/bd.gz', 'w')
f.write(body)
f.close
....
$ gunzip bd.gz
$ less bd

What should I do to decompress it in Python?

Regards, Enrique

[Dima Dorfman]

Re: zlib.decompress cannot, gunzip can

On 2005-03-01, enrio@online.no <enrio@online.n o> wrote:[color=blue]
> I have a string which I try to decompress:
>
> body = zlib.decompress (body)
>
> but I get
>
> zlib.error: Error -3 while decompressing data: incorrect header check
>
> However, I can write the string to a file and run gunzip with the
> expected results:[/color]

gzip files have a header preceding the zlib stream. Try the gzip module.

[enrio@online.no]

Re: zlib.decompress cannot, gunzip can

Thanks, now the code is

from cStringIO import StringIO
from gzip import GzipFile
...
body = GzipFile('','r' ,0,StringIO(bod y)).read()

Regards, Enrique