Generating .pyc/.pyo from a make file

[Tim Daneliuk]

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 -

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Tim Daneliuk     tundra at tundraware.com
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