Python using ZIP64 extensions when compressing large files

Question

I have a script that compresses the output files. The problem is that one of the files is over 4Gigs. How would I convert my script to use ZIP64 extensions instead of the standard zip?

Here is how I am currently zipping:

try:
    import zlib
    compression = zipfile.ZIP_DEFLATED
except:
    compression = zipfile.ZIP_STORED

modes = { zipfile.ZIP_DEFLATED: 'deflated',
          zipfile.ZIP_STORED:   'stored',
          } 

compressed_name = 'edw_files_' + datetime.strftime(date(), '%Y%m%d') + '.zip' 
print 'creating archive'
zf = zipfile.ZipFile('edw_files_' + datetime.strftime(date(), '%Y%m%d') + '.zip', mode='w')
try:
    zf.write(name1, compress_type=compression)
    zf.write(name2, compress_type=compression)
    zf.write(name3, compress_type=compression)
finally:
    print 'closing'
    zf.close()

score 20 · Answer 1 · edited Jun 09 '16 at 07:37

20

Check out zipfile-objects.

You can do this:

zf = zipfile.ZipFile('edw_files_' + datetime.strftime(date(), '%Y%m%d') + '.zip', mode='w', allowZip64 = True)

edited Jun 09 '16 at 07:37

Abdul Fatir

6,159
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answered Jul 21 '15 at 18:11

Oladayo Oyelade

225
2
9

But, allowZip64 default value is True – Cícero Alves May 27 '20 at 17:46
2

Sorry! Default isTrue just Python 3. Python 2 default is False – Cícero Alves May 27 '20 at 18:27

MrAlexBailey · Answer 2 · 2015-04-23T17:43:34.177

9

Like this:

zf = zipfile.ZipFile('edw_files_' + datetime.strftime(date(), '%Y%m%d') + '.zip', mode='w', allowZip64=True)

edited Apr 23 '15 at 17:43

answered Apr 23 '15 at 17:37

MrAlexBailey

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30

Python using ZIP64 extensions when compressing large files

2 Answers2