The patch has been outdated by other independent performance work on the zipfile module.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