[Python-Dev] PEP 384 status (original) (raw)

Nick Coghlan ncoghlan at gmail.com
Thu Sep 2 23:48:35 CEST 2010

On Wed, Sep 1, 2010 at 10:54 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:

Please consider this: even without relying on PEP 384, using FILE* is /already/ dangerous; because you might compile an extension with a different compiler version than Python was compiled with. So, if we were following you, we should rip out PyObjectPrint() of the whole C API, not only the limited subset which is defined by PEP 384.

(now I have nothing against completely ripping out PyObjectPrint() if we find out that it's not really useful...)

I finally took the obvious step of grepping the include directory to see what APIs were even affected by this question. Turns out there are more APIs than I thought, but most extension modules aren't going to need most of them (since they're related to code parsing, compilation and execution directly from files). For the remainder, I propose as a starting point that users of the stable ABI be directed to the Python equivalents, with the possibility of later adding inline functions for more commonly used API elements. PyObject_Print is the only one I would bother providing as part of the initial stable ABI implementation.

Cheers, Nick.

Search criteria: grep "FILE ?*" *

object.h:typedef int (*printfunc)(PyObject *, FILE *, int); object.h:PyAPI_FUNC(int) PyObject_Print(PyObject *, FILE *, int);

fileobject.h:PyAPI_FUNC(char *) Py_UniversalNewlineFgets(char , int, FILE, PyObject *); marshal.h:PyAPI_FUNC(void) PyMarshal_WriteLongToFile(long, FILE *, int); marshal.h:PyAPI_FUNC(void) PyMarshal_WriteObjectToFile(PyObject *, FILE *, int); marshal.h:PyAPI_FUNC(long) PyMarshal_ReadLongFromFile(FILE *); marshal.h:PyAPI_FUNC(int) PyMarshal_ReadShortFromFile(FILE *); marshal.h:PyAPI_FUNC(PyObject *) PyMarshal_ReadObjectFromFile(FILE *); marshal.h:PyAPI_FUNC(PyObject *) PyMarshal_ReadLastObjectFromFile(FILE *); parsetok.h:PyAPI_FUNC(node *) PyParser_ParseFile (FILE *, const char *, grammar *, int, parsetok.h:PyAPI_FUNC(node *) PyParser_ParseFileFlags(FILE *, const char *, parsetok.h:PyAPI_FUNC(node *) PyParser_ParseFileFlagsEx(FILE *, const char *, pythonrun.h:PyAPI_FUNC(int) PyRun_AnyFileFlags(FILE *, const char *, PyCompilerFlags *); pythonrun.h:PyAPI_FUNC(int) PyRun_AnyFileExFlags(FILE *, const char *, int, PyCompilerFlags *); pythonrun.h:PyAPI_FUNC(int) PyRun_SimpleFileExFlags(FILE *, const char *, int, PyCompilerFlags *); pythonrun.h:PyAPI_FUNC(int) PyRun_InteractiveOneFlags(FILE *, const char *, PyCompilerFlags *); pythonrun.h:PyAPI_FUNC(int) PyRun_InteractiveLoopFlags(FILE *, const char *, PyCompilerFlags *); pythonrun.h:PyAPI_FUNC(struct _mod *) PyParser_ASTFromFile(FILE *, const char *, pythonrun.h:PyAPI_FUNC(struct _node *) PyParser_SimpleParseFileFlags(FILE *, const char *, pythonrun.h:PyAPI_FUNC(PyObject *) PyRun_FileExFlags(FILE *, const char *, int, pythonrun.h:PyAPI_FUNC(int) Py_FdIsInteractive(FILE *, const char *); pythonrun.h:PyAPI_FUNC(char *) PyOS_Readline(FILE *, FILE *, char *); pythonrun.h:PyAPI_DATA(char) *(*PyOS_ReadlineFunctionPointer)(FILE *, FILE *, char *);

abstract.h: int PyObject_Print(PyObject *o, FILE *fp, int flags);

grammar.h:void printgrammar(grammar *g, FILE *fp); grammar.h:void printnonterminals(grammar *g, FILE *fp); object.h:PyAPI_FUNC(void) _Py_PrintReferences(FILE *); object.h:PyAPI_FUNC(void) _Py_PrintReferenceAddresses(FILE *); Python.h:PyAPI_FUNC(FILE *) _Py_wfopen(const wchar_t *path, const wchar_t mode); Python.h:PyAPI_FUNC(FILE) _Py_fopen(PyObject *unicode, const char *mode);

-- Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia

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