| Author |
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Just
*nix forums addict
Joined: 24 Feb 2005
Posts: 54
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 Posted: Thu Feb 03, 2005 10:57 am Post subject:
Re: Generating .pyc/.pyo from a make file
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In article <ctscc1$isf$1@news1.tilbu1.nb.home.nl>,
vincent wehren <vincent@visualtrans.de> wrote:
| Quote: | Tim Daneliuk wrote:
Steve Holden wrote:
Roland Heiber wrote:
Tim Daneliuk wrote:
Aha! Exactly ... and that makes perfect sense too. D'oh! I guess a
better
distribution strategy would be to have the installation program generate
the pyo
file at installation time...
Thanks -
Also, the *.py? files contain the full pathname of the *.py they have
been compiled from.
|
True.
| Quote: | Copying them to other path locations will give you
the wrong __file___ information in tracebacks.
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This is not 100% accurate: yes, the traceback shows the original source
file path, yet module.__file__ does point to the actual .pyc file it was
loaded from.
Just |
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Roland Heiber
*nix forums beginner
Joined: 02 Mar 2005
Posts: 19
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| Posted: Thu Feb 03, 2005 6:55 am Post subject:
Re: Generating .pyc/.pyo from a make file
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Roland Heiber wrote:
| Quote: | Tim Daneliuk wrote:
under the impression that "compiled" meant optimized byte code that
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You where right, i was totally mislead by "optimized" ... ;)
Greetings, Roland |
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Vincent Wehren
*nix forums addict
Joined: 23 Feb 2005
Posts: 58
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| Posted: Thu Feb 03, 2005 3:19 am Post subject:
Re: Generating .pyc/.pyo from a make file
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Tim Daneliuk wrote:
| Quote: | Steve Holden wrote:
Roland Heiber wrote:
Tim Daneliuk wrote:
Aha! Exactly ... and that makes perfect sense too. D'oh! I guess a
better
distribution strategy would be to have the installation program generate
the pyo
file at installation time...
Thanks -
|
Also, the *.py? files contain the full pathname of the *.py they have
been compiled from. Copying them to other path locations will give you
the wrong __file___ information in tracebacks.
--
Vincent Wehren |
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Tim Daneliuk
*nix forums Guru Wannabe
Joined: 20 Mar 2005
Posts: 119
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| Posted: Wed Feb 02, 2005 11:38 pm Post subject:
Re: Generating .pyc/.pyo from a make file
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Steve Holden wrote:
| Quote: | Roland Heiber wrote:
Tim Daneliuk wrote:
It does - thanks. One more question: Are pyc and pyo file portable
across operating systems? I suspect not since I generated a pyo
on a FreeBSD machine that will not run on a Win32 machine. I was
under the impression that "compiled" meant optimized byte code that
was portable across implementations, but it looks to not be the case...
Hi,
..pyc's should be, cause it's standard python-bytecode, if you use
massive optimizations it depends not on the os but on the underlying
cpu/architecture ...
So long, Roland
You probably tried to use a bytecode file from *one* version of Python
with an interpreter of another version. Python actually checks the first
four bytes of the .pyc file for a compatible "magic number" before
accepting the file for execution.
regards
Steve
|
Aha! Exactly ... and that makes perfect sense too. D'oh! I guess a better
distribution strategy would be to have the installation program generate the pyo
file at installation time...
Thanks -
--
----------------------------------------------------------------------------
Tim Daneliuk tundra@tundraware.com
PGP Key: http://www.tundraware.com/PGP/ |
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Tim Daneliuk
*nix forums Guru Wannabe
Joined: 20 Mar 2005
Posts: 119
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| Posted: Wed Feb 02, 2005 11:16 pm Post subject:
Re: Generating .pyc/.pyo from a make file
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Roland Heiber wrote:
| Quote: | Tim Daneliuk wrote:
I use a makefile to create distribution tarballs of freestanding Python
programs and their documentation. I cannot seem to find the right
command line option to just generate a pyc/pyo file from the program
and then exit. If I use 'python -OOOO -c"import myprog"' it creates
the pyo file, but myprog starts up and keeps running.
IOW, I need a batch method for generating compiled python. I know it
exists, but I can't find it for some reason ...
TIA,
Hi,
take a look at http://docs.python.org/lib/module-compileall.html
HtH, Roland
|
It does - thanks. One more question: Are pyc and pyo file portable
across operating systems? I suspect not since I generated a pyo
on a FreeBSD machine that will not run on a Win32 machine. I was
under the impression that "compiled" meant optimized byte code that
was portable across implementations, but it looks to not be the case...
--
----------------------------------------------------------------------------
Tim Daneliuk tundra@tundraware.com
PGP Key: http://www.tundraware.com/PGP/ |
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Steve Holden
*nix forums Guru
Joined: 22 Feb 2005
Posts: 1255
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| Posted: Wed Feb 02, 2005 10:39 pm Post subject:
Re: Generating .pyc/.pyo from a make file
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Tim Daneliuk wrote:
| Quote: | Steve Holden wrote:
Roland Heiber wrote:
Tim Daneliuk wrote:
It does - thanks. One more question: Are pyc and pyo file portable
across operating systems? I suspect not since I generated a pyo
on a FreeBSD machine that will not run on a Win32 machine. I was
under the impression that "compiled" meant optimized byte code that
was portable across implementations, but it looks to not be the case...
Hi,
..pyc's should be, cause it's standard python-bytecode, if you use
massive optimizations it depends not on the os but on the underlying
cpu/architecture ...
So long, Roland
You probably tried to use a bytecode file from *one* version of Python
with an interpreter of another version. Python actually checks the
first four bytes of the .pyc file for a compatible "magic number"
before accepting the file for execution.
regards
Steve
Aha! Exactly ... and that makes perfect sense too. D'oh! I guess a
better
distribution strategy would be to have the installation program generate
the pyo
file at installation time...
Thanks -
That's what most sensible distributions do. |
regards
Steve
--
Meet the Python developers and your c.l.py favorites March 23-25
Come to PyCon DC 2005 http://www.pycon.org/
Steve Holden http://www.holdenweb.com/ |
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Steve Holden
*nix forums Guru
Joined: 22 Feb 2005
Posts: 1255
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| Posted: Wed Feb 02, 2005 10:22 pm Post subject:
Re: Generating .pyc/.pyo from a make file
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Roland Heiber wrote:
| Quote: | Tim Daneliuk wrote:
It does - thanks. One more question: Are pyc and pyo file portable
across operating systems? I suspect not since I generated a pyo
on a FreeBSD machine that will not run on a Win32 machine. I was
under the impression that "compiled" meant optimized byte code that
was portable across implementations, but it looks to not be the case...
Hi,
..pyc's should be, cause it's standard python-bytecode, if you use
massive optimizations it depends not on the os but on the underlying
cpu/architecture ...
So long, Roland
|
You probably tried to use a bytecode file from *one* version of Python
with an interpreter of another version. Python actually checks the first
four bytes of the .pyc file for a compatible "magic number" before
accepting the file for execution.
regards
Steve
--
Meet the Python developers and your c.l.py favorites March 23-25
Come to PyCon DC 2005 http://www.python.org/pycon/2005/
Steve Holden http://www.holdenweb.com/ |
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Roland Heiber
*nix forums beginner
Joined: 02 Mar 2005
Posts: 19
|
| Posted: Wed Feb 02, 2005 10:21 pm Post subject:
Re: Generating .pyc/.pyo from a make file
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Tim Daneliuk wrote:
| Quote: | It does - thanks. One more question: Are pyc and pyo file portable
across operating systems? I suspect not since I generated a pyo
on a FreeBSD machine that will not run on a Win32 machine. I was
under the impression that "compiled" meant optimized byte code that
was portable across implementations, but it looks to not be the case...
|
Hi,
..pyc's should be, cause it's standard python-bytecode, if you use
massive optimizations it depends not on the os but on the underlying
cpu/architecture ...
So long, Roland |
|
| Back to top |
|
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Roland Heiber
*nix forums beginner
Joined: 02 Mar 2005
Posts: 19
|
| Posted: Wed Feb 02, 2005 10:18 pm Post subject:
Re: Generating .pyc/.pyo from a make file
|
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Tim Daneliuk wrote:
| Quote: | I use a makefile to create distribution tarballs of freestanding Python
programs and their documentation. I cannot seem to find the right
command line option to just generate a pyc/pyo file from the program
and then exit. If I use 'python -OOOO -c"import myprog"' it creates
the pyo file, but myprog starts up and keeps running.
IOW, I need a batch method for generating compiled python. I know it
exists, but I can't find it for some reason ...
TIA,
Hi, |
take a look at http://docs.python.org/lib/module-compileall.html
HtH, Roland |
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Tim Daneliuk
*nix forums Guru Wannabe
Joined: 20 Mar 2005
Posts: 119
|
| Posted: Wed Feb 02, 2005 10:18 pm Post subject:
Generating .pyc/.pyo from a make file
|
|
|
I use a makefile to create distribution tarballs of freestanding Python
programs and their documentation. I cannot seem to find the right
command line option to just generate a pyc/pyo file from the program
and then exit. If I use 'python -OOOO -c"import myprog"' it creates
the pyo file, but myprog starts up and keeps running.
IOW, I need a batch method for generating compiled python. I know it
exists, but I can't find it for some reason ...
TIA,
--
----------------------------------------------------------------------------
Tim Daneliuk tundra@tundraware.com
PGP Key: http://www.tundraware.com/PGP/ |
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