Sorry, I must be on the wrong list. Can you please give me the correct list?
Eddy From: Brett Cannon [mailto:br...@python.org] Sent: Friday, January 15, 2016 6:58 PM To: Eddy Quicksall; python-dev@python.org Subject: Re: [Python-Dev] C struct for Str( ) I don't quite see what this has to do with has to do with the development of Python, Eddy. You can always reference the C API at https://docs.python.org/3/c-api/index.html . And `PyBytesObject` is an instance of `bytes` in Python. On Fri, 15 Jan 2016 at 15:33 Eddy Quicksall <e...@quicksall.com> wrote: I want to fill an Str() string from a C function. But I think I am using the wrong structure (PyBytesObject). I have written a C function to dump the Python class but as you can see the structure I'm using does not match the data in the class. Can someone please tell me the correct structure: --------- Python snip --------- class _vendorRecord_2: vendorListNumber = str() vendorNumber = str() vendorName = str('x' * 20) vendorRecord_2 = _vendorRecord_2() print(len(vendorRecord_2.vendorName)) print(vendorRecord_2.vendorName + '|') XBaseDump_PythonString(py_object(vendorRecord_2.vendorName)) --------- C function -------- #define MS_NO_COREDLL #undef _DEBUG #include <W:\Python-3.5.1\Include\python.h> DSI_DLL void CALL_TYPE XBaseDump_PythonString( PyBytesObject *pBytesObject ) { printf( "ob_size = %d, ob_shash = %X, ob_sval = %s\n", pBytesObject->ob_base.ob_size, pBytesObject->ob_shash, pBytesObject->ob_sval ); printf( "offsetof(ob_size) = %d, offsetof(ob_sval) = %d\n", offsetof( PyBytesObject, ob_base.ob_size ), offsetof( PyBytesObject, ob_sval ) ); printf( "sizeof(PyBytesObject) = %d\n", sizeof(PyBytesObject) ); DsmDumpBytes( pBytesObject, 32 ); } -------- output ------------ 20 xxxxxxxxxxxxxxxxxxxx| ob_size = 20, ob_shash = 70768D53, ob_sval = σsci offsetof(ob_size) = 8, offsetof(ob_sval) = 16 sizeof(PyBytesObject) = 20 0000: 03 00 00 00 60 B0 DC 1D 14 00 00 00 53 8D 76 70 ....-........... 0016: E5 73 63 69 00 00 00 00 78 78 78 78 78 78 78 78 V............... --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus _______________________________________________ Python-Dev mailing list Python-Dev@python.org https://mail.python.org/mailman/listinfo/python-dev Unsubscribe: https://mail.python.org/mailman/options/python-dev/brett%40python.org --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
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