view Python/frozen.c @ 43840:73c8e27eb9ce

Correction for issue1265 (pdb bug with "with" statement). When an unfinished generator-iterator is garbage collected, PyEval_EvalFrameEx is called with a GeneratorExit exception set. This leads to funny results if the sys.settrace function itself makes use of generators. A visible effect is that the settrace function is reset to None. Another is that the eventual "finally" block of the generator is not called. It is necessary to save/restore the exception around the call to the trace function. This happens a lot with py3k: isinstance() of an ABCMeta instance runs def __instancecheck__(cls, instance): """Override for isinstance(instance, cls).""" return any(cls.__subclasscheck__(c) for c in {instance.__class__, type(instance)}) which lets an opened generator expression each time it returns True. Seems a backport candidate, even if the case is less frequent in 2.5.
author Amaury Forgeot d'Arc <amauryfa@gmail.com>
date Tue, 13 Nov 2007 01:05:30 +0000
parents a2213060d9dd
children cab14be0ada1
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/* Dummy frozen modules initializer */

#include "Python.h"

/* In order to test the support for frozen modules, by default we
   define a single frozen module, __hello__.  Loading it will print
   some famous words... */

/* To regenerate this data after the bytecode or marshal format has changed,
   go to ../Tools/freeze/ and freeze the flag.py file; then copy and paste
   the appropriate bytes from M___main__.c. */

static unsigned char M___hello__[] = {
	99,0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,
	0,64,0,0,0,115,10,0,0,0,100,1,0,90,1,0,
	100,0,0,83,40,2,0,0,0,78,84,40,2,0,0,0,
	117,4,0,0,0,84,114,117,101,117,11,0,0,0,105,110,
	105,116,105,97,108,105,122,101,100,40,0,0,0,0,40,0,
	0,0,0,40,0,0,0,0,117,7,0,0,0,102,108,97,
	103,46,112,121,117,8,0,0,0,60,109,111,100,117,108,101,
	62,1,0,0,0,115,0,0,0,0,
};

#define SIZE (int)sizeof(M___hello__)

static struct _frozen _PyImport_FrozenModules[] = {
	/* Test module */
	{"__hello__", M___hello__, SIZE},
	/* Test package (negative size indicates package-ness) */
	{"__phello__", M___hello__, -SIZE},
	{"__phello__.spam", M___hello__, SIZE},
	{0, 0, 0} /* sentinel */
};

/* Embedding apps may change this pointer to point to their favorite
   collection of frozen modules: */

struct _frozen *PyImport_FrozenModules = _PyImport_FrozenModules;