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Showing content from https://mail.python.org/pipermail/python-dev/2001-October/017912.html below:

[Python-Dev] Where is PyMarshal_ReadShortFromFile() ?

[Python-Dev] Where is PyMarshal_ReadShortFromFile() ?James C. Ahlstrom jim@interet.com
Fri, 12 Oct 2001 09:45:39 -0400
"Fred L. Drake, Jr." wrote:
> 
> James C. Ahlstrom writes:
>  > Yes, I think PyMarshal_ReadLongFromFile() and PyMarshal_ReadShortFromFile()
>  > are indeed part of Python's public C API, and that is why they were in
>  > marshal.c with public declarations.
> 
>   I think my "should they be?" question remains valid.

Ooops, I meant "they were in marshal.h".

Yes they should be public, because PyMarshal_ReadLongFromFile() is used
in import.c to read the Python byte code signature MAGIC from a *.pyc file.
I need a PyMarshal_ReadShortFromFile() to read zip archives in import.c.

>   Modules/_testcapimodule.c.

Thanks, I knew it had to be somewhere but I couldn't find it.

> If the function is being sufficiently covered by other tests, then we
> don't need to add new tests.  Since it was missing, I have to presume
> it wasn't being called.  That tells me that it either isn't needed at
> all or some test needs to exercise it.

Not true.  PyMarshal_ReadLongFromFile() is just a wraper function
for the function r_long() which is used internally by marshal.
Similarly, there is already an r_short() used internally by marshal.
Presumably, marshal would't work if these fail, so I assume they
work.  The PyMarshal_ReadShortFromFile() is just a wraper for r_short(),
not new funtionality.

>   As for the documentation, I think the discoverability issue I
> brought up indicates that we're doing the right thing -- its a lot
> easier to learn the public API with documentation than without it.  I
> don't know about the rest of the PythonLabs group, but I certainly
> find the C API documentaiton useful.

Yes, I find it essential, and wish there were more.

JimA



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