[issue3978] ZipFileExt.read() can be incredibly slow; patch included

[Antoine Pitrou]

Antoine Pitrou <pitrou at free.fr> added the comment:

The patch has been outdated by other independent performance work on the zipfile module. In Python 3.2, the zipfile module is actually slightly faster than the "unzip" program:

- first with the supplied "zeroes.zip" file:

$ rm -f zeroes && time -p unzip -e zeroes.zip
Archive:  zeroes.zip
  inflating: zeroes                  
real 0.56
user 0.50
sys 0.06

$ time -p ./python -m zipfile -e zeroes.zip .
real 0.45
user 0.34
sys 0.10

- Then with a 100MB random file:

$ rm -f random && time -p unzip -e random.zip
Archive:  random.zip
  inflating: random                  
real 0.69
user 0.61
sys 0.07

$ rm -f random && time -p ./python -m zipfile -e random.zip .
real 0.33
user 0.18
sys 0.14

----------
resolution:  -> out of date
status: open -> closed
versions: +Python 3.2 -Python 2.7, Python 3.1

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<http://bugs.python.org/issue3978>
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