Generating .pyc/.pyo from a make file
Steve Holden
steve at holdenweb.com
Wed Feb 2 18:22:16 EST 2005
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
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