simple python script to zip files

[T_T]

Hi,

I'm just starting to learn some Python basics and are not familiar with
file handling.
Looking for a python scrip that zips files.
So aaa.xx bbb.yy ccc.xx should be zipped to aaa.zip bbb.zip ccc.zip

I haven't been able to type more than 'import gzip'..

Just a script I need for practical use (zip didn't do the job) and not
for educational purposes.

[T_T]

On Sat, 16 Feb 2008 15:37:16 +0000, T_T wrote:

Hi,

I'm just starting to learn some Python basics and are not familiar with
file handling.
Looking for a python scrip that zips files. So aaa.xx bbb.yy ccc.xx
should be zipped to aaa.zip bbb.zip ccc.zip

I haven't been able to type more than 'import gzip'..

Just a script I need for practical use (zip didn't do the job) and not
for educational purposes.

btw. I need it for batch handling, so I want to place the file in a
directory, run it and zip all files in the directory.

Hope someone will be able to help me.

[Tim Chase]

>I'm just starting to learn some Python basics and are not familiar with

>file handling.
Looking for a python scrip that zips files. So aaa.xx bbb.yy ccc.xx
should be zipped to aaa.zip bbb.zip ccc.zip

I haven't been able to type more than 'import gzip'..

Well, you ask for zip files, but then import gzip... ?

btw. I need it for batch handling, so I want to place the file in a
directory, run it and zip all files in the directory.

>>import os, zipfile
for fname in os.listdir('.'):

.... basename, ext = os.path.splitext(fname)
.... if ext.lower().endswith('zip'): continue
.... f = zipfile.ZipFile('%s.zip' % basename, 'w')
.... f.write(fname)
.... f.close()
.... print fname
....

seems to do the trick for me.

-tkc

[T_T]

>

seems to do the trick for me.

-tkc

Thanks! Works indeed. Strange thing is though, the files created are the
exact size as the original file. So it seems like it is zipping without
compression.

[Tim Chase]

Thanks! Works indeed. Strange thing is though, the files created are the

exact size as the original file. So it seems like it is zipping without
compression.

The instantiation of the ZipFile object can take an optional
parameter to control the compression. The zipfile module only
supports storing (the default as you discovered) and "deflation":

f = zipfile.ZipFile(zipfilename, 'w',
compression=zipfile.ZIP_DEFLATED)

You can read more at

http://docs.python.org/lib/zipfile-objects.html

-tkc

[T_T]

f = zipfile.ZipFile(zipfilename, 'w',

compression=zipfile.ZIP_DEFLATED)

-tkc

Adding the compression rule works great, thanks again!