<s>
py2exe	B-Application
is	O
a	O
Python	B-Language
extension	O
which	O
converts	O
Python	B-Language
scripts	I-Language
(	O
.py	B-Language
)	O
into	O
Microsoft	B-Application
Windows	I-Application
executables	B-Application
(	O
.exe	O
)	O
.	O
</s>
<s>
These	O
executables	B-Application
can	O
run	O
on	O
a	O
system	O
without	O
Python	B-Language
installed	O
.	O
</s>
<s>
py2exe	B-Application
was	O
used	O
to	O
distribute	O
the	B-Protocol
official	I-Protocol
BitTorrent	I-Protocol
client	I-Protocol
(	O
before	O
the	O
version	O
6.0	O
)	O
and	O
is	O
still	O
used	O
to	O
distribute	O
SpamBayes	O
as	O
well	O
as	O
other	O
projects	O
.	O
</s>
<s>
Since	O
May	O
2014	O
,	O
version	O
0.9.2.0	O
of	O
py2exe	B-Application
is	O
available	O
for	O
Python	B-Language
3	O
.	O
</s>
<s>
Before	O
then	O
,	O
py2exe	B-Application
was	O
made	O
only	O
for	O
Python	B-Language
2	O
,	O
and	O
it	O
was	O
necessary	O
to	O
use	O
an	O
alternative	O
like	O
cx_Freeze	O
for	O
Python	B-Language
3	O
code	O
.	O
</s>
<s>
Although	O
this	O
program	O
transforms	O
a	O
.py	B-Language
file	O
to	O
an	O
.exe	O
,	O
it	O
does	O
not	O
make	O
it	O
run	O
faster	O
because	O
py2exe	B-Application
bundles	O
the	O
Python	B-Language
bytecode	O
without	O
converting	O
it	O
to	O
machine-code	O
.	O
</s>
<s>
It	O
may	O
even	O
run	O
slower	O
than	O
using	O
the	O
Python	B-Language
interpreter	O
directly	O
because	O
of	O
startup	O
overhead	O
.	O
</s>
