RELEASED Python 2.3.1

Thomas Heller theller at
Thu Sep 25 20:38:23 CEST 2003

Dave Brueck <dave at> writes:

> venster.pycb (82k)
> main.pycb (15k)
> Under 100KB is not bad for a GUI app! :) 
> The .pycb format is basically ZIP + AES encryption, and pycb uses the new 
> import hooks in 2.3 to handle it. The encryption is just to keep honest 
> people out; anybody with the right combination of smart and bored could 
> figure out how to circumvent it.

I have also experimented with importing encrypted .pyo files, but my
short experiments so far didn't give sufficient speed. Only the a simple
string.translate() or the rotor module with one permutation didn't slow
down the import by several orders of magnitude. What decryption rates do
you get?


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