[Tutor] Reading .gz files

[Steven D'Aprano]

Hanlie Pretorius wrote:

> [code]
> import gzip
> 
> f1 = 'GSMaP_MVK+.20050101.00.0.1deg.hourly.v484.gz'
> f2 = ''text.txt.gz'
> if1 = gzip.open(f1, 'rb')
> if2 = gzip.open(f2,'rb')
> try:
>    print if1.read()
>    print 'done with f1'
>    print if2.read()
>    print 'done with f2'
> finally:
>    if1.close()
>    if2.close()
> [/code]
> 
> [output]
> done with f1
> Text to test gzip module.
> done with f2
> [/output]

> This seems to indicate that something is wrong with f1 (the GSMaP file - a

Are you sure it is an actual gzip file? You refer to gzip, 7-zip, and 
unzip in your post -- these are all different compression formats. Just 
because the file is *named* .gz doesn't necessarily mean it is a gzip file.


Try this:

if1 = gzip.open(f1, 'rb')
print repr(if1.read())
print if1.size, if1.crc, if1.name

and see what they say.





-- 
Steven