[NumPy-Tickets] [NumPy] #1527: numpy.savez() doesn't compress that much

[NumPy Trac]

#1527: numpy.savez() doesn't compress that much
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 Reporter:  sandro.tosi  |       Owner:  somebody   
     Type:  defect       |      Status:  new        
 Priority:  normal       |   Milestone:  Unscheduled
Component:  Other        |     Version:             
 Keywords:               |  
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Changes (by eteq):

  * type:  enhancement => defect


Comment:

 I think this is actually a bug.  There's a line in numpy/lib/npyio.py that
 reads:
     zip = zipfile.ZipFile(file, mode="w")
 and to have the zipfile actually be compressed, it should say
     zip = zipfile.ZipFile(file, mode="w",compression=zipfile.ZIP_DEFLATED)
 Although it may be that this is done to prevent the function from failing
 for those who don't have zlib installed... but this is probably better
 fixed by doing:

 try:
     zip = zipfile.ZipFile(file, mode="w",compression=zipfile.ZIP_DEFLATED)
 except RuntimeError:
     zip = zipfile.ZipFile(file, mode="w",compression=zipfile.ZIP_STORED)

-- 
Ticket URL: <http://projects.scipy.org/numpy/ticket/1527#comment:2>
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