Can .py be complied?

[monkey]

Hi all, I am new to programming, already have a glace on introduction of
c++, java and finally decided on python. But I found that the .py file is
just like the source file, how can I make a program without revealing its
source? (may be my question is a little bit stupid)

[Harlin Seritt]

Re: Can .py be complied?

Hi monkey,

Not a stupid question especially if you're trying to create commercial
software and don't want to reveal your source. At any rate, you can use
py2exe to create a .exe file. It does have some cons to it since you
are compiling an interpreted script but it works fine in this capacity.
If you would like to obfuscate your code (disguise it) without an
executable you can try pyobfuscate as well. Just Google for these two
and you'll find easily.

Harlin Seritt

[Maurice LING]

Re: Can .py be complied?

monkey wrote:[color=blue]
> Hi all, I am new to programming, already have a glace on introduction of
> c++, java and finally decided on python. But I found that the .py file is
> just like the source file, how can I make a program without revealing its
> source? (may be my question is a little bit stupid)
>
>[/color]

It is generally not very easy or straight-forward. The developers of
CPython had generally intended that the source codes be the actual
distribution, and is not likely to change. (see the thread on "bytecode
non-backcompatibili ty")

For now, you can use pyfreeze to snap the application, which is to
bundle your application to a python interpreter (bootstrapping) as a
package but this will not create a portable application. You can only
run the application on the native system that it is frozen on. For
example, if i freeze my application on Mac OSX, I won't be able to run
that on MS Windows. Freezing bootstraps the system's python onto the
application.

If your application does not use any C modules, you can try to use
Jython instead. Program in python but use jythonc to convert it into
Java source files and package it into Java JAR files, then you will only
need to release the JAR files without needing to release your codes.

Cheers
Maurice

[ryan@ryankaskel.com]

Re: Can .py be complied?

I don't know the exact details, but try using the compiled Python
scripts (bytecode). I believe they are semi-optimized and platform
independent. They are the .pyc and .pyo files generated when the script
is run.

[ryan@ryankaskel.com]

Re: Can .py be complied?


ryan@ryankaskel .com wrote:[color=blue]
> I don't know the exact details, but try using the compiled Python
> scripts (bytecode). I believe they are semi-optimized and platform
> independent. They are the .pyc and .pyo files generated when the[/color]
script[color=blue]
> is run.[/color]

Okay, I found this documentation
<http://fux0r.phathooku ps.com/programming-tutorials/Python/tut/node43.html>.
It hides the source but you still need Python installed on the system
running the bytecode.

[monkey]

Re: Can .py be complied?

Thanks all of you guys, I found that python newsgroup is of wealthy
knowledge:
[color=blue]
> If you would like to obfuscate your code (disguise it) without an
> executable you can try pyobfuscate as well.
>
> Harlin Seritt
>[/color]

Yes, I want more options. Since the python doc mentioned py2exe only, and it
is difficult to understand how it work.(may be you guys know C and make
file, but I am still foolish here...)
[color=blue]
> It is generally not very easy or straight-forward.
> For now, you can use pyfreeze to snap the application.... .
> If your application does not use any C modules, you can try to use
> Jython instead.
>
> Cheers
> Maurice[/color]

If using Jython to complie, is the end-user need JRE instead of Python
installed, or need both of them?
[color=blue]
> I don't know the exact details, but try using the compiled Python
> scripts (bytecode). I believe they are semi-optimized and platform
> independent. They are the .pyc and .pyo files generated when the script
> is run.
>
>ryan@ryankaske l[/color]

Is that means a .py convert to .pyc or .pyo, without the need of "make file"
as using py2exe?

[Filip Dreger]

Re: Can .py be complied?


U¿ytkownik "monkey" <m@m.com> napisa³ w wiadomo¶ci
news:426f562f$1 _3@rain.i-cable.com...
[color=blue]
> If using Jython to complie, is the end-user need JRE instead of
> Python
> installed, or need both of them?[/color]

Only JRE. Just like Java.
[color=blue][color=green]
>> I don't know the exact details, but try using the compiled Python
>> scripts (bytecode). I believe they are semi-optimized and platform
>> independent. They are the .pyc and .pyo files generated when the
>> script
>> is run.[/color]
> Is that means a .py convert to .pyc or .pyo, without the need of
> "make file"
> as using py2exe?[/color]

..pyc files are generated every time a module (any .py file can be a
module) is imported. So if you have a program, say, example.py, you
just start the python interpreter and write:[color=blue][color=green][color=darkred]
>>> import example[/color][/color][/color]
And then example.pyc will appear beside example.py. This new file does
not require example.py (you can even delete it), and works on any
computer with Python installed (on Windows you can just double-click
it)
If you start the Python interpreter using:
python -OO (if you are using Windows, you shoud start the interpreter
from the command line, probably something like:
c:
cd \
python24\python -OO)
and then import your example.py, you will get a file example.pyo,
which is also stripped of any documentation strings (a bit harder to
decode).

regards,
Filip Dreger

[Kent Johnson]

Re: Can .py be complied?

monkey wrote:[color=blue][color=green]
>>It is generally not very easy or straight-forward.
>>For now, you can use pyfreeze to snap the application.... .
>>If your application does not use any C modules, you can try to use
>>Jython instead.
>>
>>Cheers
>>Maurice[/color]
>
>
> If using Jython to complie, is the end-user need JRE instead of Python
> installed, or need both of them?[/color]

The end-user needs the JRE, not Python.

Kent

[Lucas Raab]

Re: Can .py be complied?

ryan@ryankaskel .com wrote:[color=blue]
> ryan@ryankaskel .com wrote:
>[color=green]
>>I don't know the exact details, but try using the compiled Python
>>scripts (bytecode). I believe they are semi-optimized and platform
>>independent . They are the .pyc and .pyo files generated when the[/color]
>
> script
>[color=green]
>>is run.[/color]
>
>
> Okay, I found this documentation
> <http://fux0r.phathooku ps.com/programming-tutorials/Python/tut/node43.html>.
> It hides the source but you still need Python installed on the system
> running the bytecode.
>[/color]

But those files can be decompyled.

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lvraab"@"earthl ink.net
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[Maksim Kasimov]

Re: Can .py be complied?


"Maurice LING" <mauriceling@ac m.org> wrote:
news:d4mq31$gq3 $1@domitilla.ai oe.org...[color=blue]
> If your application does not use any C modules, you can try to use
> Jython instead. Program in python but use jythonc to convert it into
> Java source files and package it into Java JAR files, then you will only
> need to release the JAR files without needing to release your codes.[/color]

using Jython will not helps to hide your sources - jar-files are also easy
to decompile and to receive the source code (it will even looks like
original).
To avoid releasing your java-code (as far as it possible), the jar-files are
also necessary for processing by obfuscators


--
Best regards,
Maksim Kasimov
mailto: kasimov@i.com.u a

[monkey]

Re: Can .py be complied?

> And then example.pyc will appear beside example.py. This new file does[color=blue]
> not require example.py (you can even delete it), and works on any
> computer with Python installed[/color]

Filip, you can read through my mind (-: You just told me what I want to know
exactly, even I can't ask the question correctly. Thx..
[color=blue]
> python24\python -OO)
> and then import your example.py, you will get a file example.pyo,
> which is also stripped of any documentation strings (a bit harder to
> decode).[/color]

Is .pyo still not secure for serious purpose? The -OO function refer to
which area of python that I can read a doc in details?
[color=blue]
> The end-user needs the JRE, not Python.
>
> Kent[/color]

Actually I still not dare to touch Jython, because I am still digging python
now. But the JRE may not attract end-user, because it is still associate
with "slow" and "eating much system resource", although Java is sure a
respectfully programming language. What do you think?

[monkey]

Re: Can .py be complied?

>[color=blue]
> But those files can be decompyled.
>[/color]

Hi, so which way to go?

[Grant Edwards]

Re: Can .py be complied?

On 2005-04-27, monkey <m@m.com> wrote:
[color=blue]
> Yes, I want more options. Since the python doc mentioned
> py2exe only, and it is difficult to understand how it
> work.(may be you guys know C and make file, but I am still
> foolish here...)[/color]

py2exe has nothing to do with C or make files. You create a
setup.py file containing a couple lines of python. You run
that python program, and you end up with an .exe file and some
associated .dll files. I typically use inno-setup to create an
installer.exe that creates a desktop icon and start-menu entry,
but that's optional.
[color=blue]
> Is that means a .py convert to .pyc or .pyo, without the need
> of "make file" as using py2exe?[/color]

Huh? You don't need a make file for py2exe.

--
Grant Edwards grante Yow! I'd like TRAINED
at SEALS and a CONVERTIBLE on
visi.com my doorstep by NOON!!

[monkey]

Re: Can .py be complied?

> py2exe has nothing to do with C or make files. You create a[color=blue]
> setup.py file containing a couple lines of python. You run
> that python program, and you end up with an .exe file and some
> associated .dll files. I typically use inno-setup to create an
> installer.exe that creates a desktop icon and start-menu entry,
> but that's optional.[/color]

Is py2exe used to make a .exe file to install .py, or make the self-contain
..exe file of the program itself?

[Grant Edwards]

Re: Can .py be complied?

On 2005-04-27, monkey <m@m.com> wrote:
[color=blue][color=green]
>> py2exe has nothing to do with C or make files. You create a
>> setup.py file containing a couple lines of python. You run
>> that python program, and you end up with an .exe file and some
>> associated .dll files. I typically use inno-setup to create
>> an installer.exe that creates a desktop icon and start-menu
>> entry, but that's optional.[/color]
>
> Is py2exe used to make a .exe file to install .py, or make the self-contain
> .exe file of the program itself?[/color]


The latter. It's not completely self contained, there is an
...exe and some dll files that need to be distributed together.
It's explained very clearly by the py2exe web site:

http://starship.python.net/crew/theller/py2exe/

Never used google before? Just go to www.google.com and type
in py2exe. Click "search". It's the first hit.

--
Grant Edwards grante Yow! Is something VIOLENT
at going to happen to a
visi.com GARBAGE CAN?