text: /* Python interpreter top-level routines, including init/exit */
  
  #include "Python.h"
  
  #include "Python-ast.h"
  #undef Yield /* undefine macro conflicting with winbase.h */
  #include "grammar.h"
  #include "node.h"
  #include "token.h"
  #include "parsetok.h"
  #include "errcode.h"
  #include "code.h"
  #include "symtable.h"
  #include "ast.h"
  #include "marshal.h"
  #include "osdefs.h"
  #include <locale.h>
  
  #ifdef HAVE_SIGNAL_H
  #include <signal.h>
  #endif
  
  #ifdef MS_WINDOWS
  #include "malloc.h" /* for alloca */
  #endif
  
  #ifdef HAVE_LANGINFO_H
  #include <langinfo.h>
  #endif
  
  #ifdef MS_WINDOWS
  #undef BYTE
  #include "windows.h"
  
  extern PyTypeObject PyWindowsConsoleIO_Type;
  #define PyWindowsConsoleIO_Check(op) (PyObject_TypeCheck((op), &PyWindowsConsoleIO_Type))
  #endif
  
  _Py_IDENTIFIER(flush);
  _Py_IDENTIFIER(name);
  _Py_IDENTIFIER(stdin);
  _Py_IDENTIFIER(stdout);
  _Py_IDENTIFIER(stderr);
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  extern wchar_t *Py_GetPath(void);
  
  extern grammar _PyParser_Grammar; /* From graminit.c */
  
  /* Forward */
  static void initmain(PyInterpreterState *interp);
  static int initfsencoding(PyInterpreterState *interp);
  static void initsite(void);
  static int initstdio(void);
  static void initsigs(void);
  static void call_py_exitfuncs(void);
  static void wait_for_thread_shutdown(void);
  static void call_ll_exitfuncs(void);
  extern int _PyUnicode_Init(void);
  extern int _PyStructSequence_Init(void);
  extern void _PyUnicode_Fini(void);
  extern int _PyLong_Init(void);
  extern void PyLong_Fini(void);
  extern int _PyFaulthandler_Init(void);
  extern void _PyFaulthandler_Fini(void);
  extern void _PyHash_Fini(void);
  extern int _PyTraceMalloc_Init(void);
  extern int _PyTraceMalloc_Fini(void);
  
  #ifdef WITH_THREAD
  extern void _PyGILState_Init(PyInterpreterState *, PyThreadState *);
  extern void _PyGILState_Fini(void);
  #endif /* WITH_THREAD */
  
  /* Global configuration variable declarations are in pydebug.h */
  /* XXX (ncoghlan): move those declarations to pylifecycle.h? */
  int Py_DebugFlag; /* Needed by parser.c */
  int Py_VerboseFlag; /* Needed by import.c */
  int Py_QuietFlag; /* Needed by sysmodule.c */
  int Py_InteractiveFlag; /* Needed by Py_FdIsInteractive() below */
  int Py_InspectFlag; /* Needed to determine whether to exit at SystemExit */
  int Py_OptimizeFlag = 0; /* Needed by compile.c */
  int Py_NoSiteFlag; /* Suppress 'import site' */
  int Py_BytesWarningFlag; /* Warn on str(bytes) and str(buffer) */
  int Py_UseClassExceptionsFlag = 1; /* Needed by bltinmodule.c: deprecated */
  int Py_FrozenFlag; /* Needed by getpath.c */
  int Py_IgnoreEnvironmentFlag; /* e.g. PYTHONPATH, PYTHONHOME */
  int Py_DontWriteBytecodeFlag; /* Suppress writing bytecode files (*.py[co]) */
  int Py_NoUserSiteDirectory = 0; /* for -s and site.py */
  int Py_UnbufferedStdioFlag = 0; /* Unbuffered binary std{in,out,err} */
  int Py_HashRandomizationFlag = 0; /* for -R and PYTHONHASHSEED */
  int Py_IsolatedFlag = 0; /* for -I, isolate from user's env */
  #ifdef MS_WINDOWS
  int Py_LegacyWindowsFSEncodingFlag = 0; /* Uses mbcs instead of utf-8 */
  int Py_LegacyWindowsStdioFlag = 0; /* Uses FileIO instead of WindowsConsoleIO */
  #endif
  
  PyThreadState *_Py_Finalizing = NULL;
  
  /* Hack to force loading of object files */
  int (*_PyOS_mystrnicmp_hack)(const char *, const char *, Py_ssize_t) = \
      PyOS_mystrnicmp; /* Python/pystrcmp.o */
  
  /* PyModule_GetWarningsModule is no longer necessary as of 2.6
  since _warnings is builtin.  This API should not be used. */
  PyObject *
  PyModule_GetWarningsModule(void)
  {
      return PyImport_ImportModule("warnings");
  }
  
  static int initialized = 0;
  
  /* API to access the initialized flag -- useful for esoteric use */
  
  int
  Py_IsInitialized(void)
  {
      return initialized;
  }
  
  /* Helper to allow an embedding application to override the normal
   * mechanism that attempts to figure out an appropriate IO encoding
   */
  
  static char *_Py_StandardStreamEncoding = NULL;
  static char *_Py_StandardStreamErrors = NULL;
  
  int
  Py_SetStandardStreamEncoding(const char *encoding, const char *errors)
  {
      if (Py_IsInitialized()) {
          /* This is too late to have any effect */
          return -1;
      }
      /* Can't call PyErr_NoMemory() on errors, as Python hasn't been
       * initialised yet.
       *
       * However, the raw memory allocators are initialised appropriately
       * as C static variables, so _PyMem_RawStrdup is OK even though
       * Py_Initialize hasn't been called yet.
       */
      if (encoding) {
          _Py_StandardStreamEncoding = _PyMem_RawStrdup(encoding);
          if (!_Py_StandardStreamEncoding) {
              return -2;
          }
      }
      if (errors) {
          _Py_StandardStreamErrors = _PyMem_RawStrdup(errors);
          if (!_Py_StandardStreamErrors) {
              if (_Py_StandardStreamEncoding) {
                  PyMem_RawFree(_Py_StandardStreamEncoding);
              }
              return -3;
          }
      }
  #ifdef MS_WINDOWS
      if (_Py_StandardStreamEncoding) {
          /* Overriding the stream encoding implies legacy streams */
          Py_LegacyWindowsStdioFlag = 1;
      }
  #endif
      return 0;
  }
  
  /* Global initializations.  Can be undone by Py_FinalizeEx().  Don't
     call this twice without an intervening Py_FinalizeEx() call.  When
     initializations fail, a fatal error is issued and the function does
     not return.  On return, the first thread and interpreter state have
     been created.
  
     Locking: you must hold the interpreter lock while calling this.
     (If the lock has not yet been initialized, that's equivalent to
     having the lock, but you cannot use multiple threads.)
  
  */
  
  static int
  add_flag(int flag, const char *envs)
  {
      int env = atoi(envs);
      if (flag < env)
          flag = env;
      if (flag < 1)
          flag = 1;
      return flag;
  }
  
  static char*
  get_codec_name(const char *encoding)
  {
      const char *name_utf8;
      char *name_str;
      PyObject *codec, *name = NULL;
  
      codec = _PyCodec_Lookup(encoding);
      if (!codec)
          goto error;
  
      name = _PyObject_GetAttrId(codec, &PyId_name);
      Py_CLEAR(codec);
      if (!name)
          goto error;
  
      name_utf8 = PyUnicode_AsUTF8(name);
      if (name_utf8 == NULL)
          goto error;
      name_str = _PyMem_RawStrdup(name_utf8);
      Py_DECREF(name);
      if (name_str == NULL) {
          PyErr_NoMemory();
          return NULL;
      }
      return name_str;
  
  error:
      Py_XDECREF(codec);
      Py_XDECREF(name);
      return NULL;
  }
  
  static char*
  get_locale_encoding(void)
  {
  #ifdef MS_WINDOWS
      char codepage[100];
      PyOS_snprintf(codepage, sizeof(codepage), "cp%d", GetACP());
      return get_codec_name(codepage);
  #elif defined(HAVE_LANGINFO_H) && defined(CODESET)
      char* codeset = nl_langinfo(CODESET);
      if (!codeset || codeset[0] == '\0') {
          PyErr_SetString(PyExc_ValueError, "CODESET is not set or empty");
          return NULL;
      }
      return get_codec_name(codeset);
  #elif defined(__ANDROID__)
      return get_codec_name("UTF-8");
  #else
      PyErr_SetNone(PyExc_NotImplementedError);
      return NULL;
  #endif
  }
  
  static void
  import_init(PyInterpreterState *interp, PyObject *sysmod)
  {
      PyObject *importlib;
      PyObject *impmod;
      PyObject *sys_modules;
      PyObject *value;
  
      /* Import _importlib through its frozen version, _frozen_importlib. */
      if (PyImport_ImportFrozenModule("_frozen_importlib") <= 0) {
          Py_FatalError("Py_Initialize: can't import _frozen_importlib");
      }
      else if (Py_VerboseFlag) {
          PySys_FormatStderr("import _frozen_importlib # frozen\n");
      }
      importlib = PyImport_AddModule("_frozen_importlib");
      if (importlib == NULL) {
          Py_FatalError("Py_Initialize: couldn't get _frozen_importlib from "
                        "sys.modules");
      }
      interp->importlib = importlib;
      Py_INCREF(interp->importlib);
  
      interp->import_func = PyDict_GetItemString(interp->builtins, "__import__");
      if (interp->import_func == NULL)
          Py_FatalError("Py_Initialize: __import__ not found");
      Py_INCREF(interp->import_func);
  
      /* Import the _imp module */
      impmod = PyInit_imp();
      if (impmod == NULL) {
          Py_FatalError("Py_Initialize: can't import _imp");
      }
      else if (Py_VerboseFlag) {
          PySys_FormatStderr("import _imp # builtin\n");
      }
      sys_modules = PyImport_GetModuleDict();
      if (Py_VerboseFlag) {
          PySys_FormatStderr("import sys # builtin\n");
      }
      if (PyDict_SetItemString(sys_modules, "_imp", impmod) < 0) {
          Py_FatalError("Py_Initialize: can't save _imp to sys.modules");
      }
  
      /* Install importlib as the implementation of import */
      value = PyObject_CallMethod(importlib, "_install", "OO", sysmod, impmod);
      if (value == NULL) {
          PyErr_Print();
          Py_FatalError("Py_Initialize: importlib install failed");
      }
      Py_DECREF(value);
      Py_DECREF(impmod);
  
      _PyImportZip_Init();
  }
  
  
  void
  _Py_InitializeEx_Private(int install_sigs, int install_importlib)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate;
      PyObject *bimod, *sysmod, *pstderr;
      char *p;
      extern void _Py_ReadyTypes(void);
  
      if (initialized)
          return;
      initialized = 1;
      _Py_Finalizing = NULL;
  
  #ifdef HAVE_SETLOCALE
      /* Set up the LC_CTYPE locale, so we can obtain
         the locale's charset without having to switch
         locales. */
      setlocale(LC_CTYPE, "");
  #endif
  
      if ((p = Py_GETENV("PYTHONDEBUG")) && *p != '\0')
          Py_DebugFlag = add_flag(Py_DebugFlag, p);
      if ((p = Py_GETENV("PYTHONVERBOSE")) && *p != '\0')
          Py_VerboseFlag = add_flag(Py_VerboseFlag, p);
      if ((p = Py_GETENV("PYTHONOPTIMIZE")) && *p != '\0')
          Py_OptimizeFlag = add_flag(Py_OptimizeFlag, p);
      if ((p = Py_GETENV("PYTHONDONTWRITEBYTECODE")) && *p != '\0')
          Py_DontWriteBytecodeFlag = add_flag(Py_DontWriteBytecodeFlag, p);
      /* The variable is only tested for existence here; _PyRandom_Init will
         check its value further. */
      if ((p = Py_GETENV("PYTHONHASHSEED")) && *p != '\0')
          Py_HashRandomizationFlag = add_flag(Py_HashRandomizationFlag, p);
  #ifdef MS_WINDOWS
      if ((p = Py_GETENV("PYTHONLEGACYWINDOWSFSENCODING")) && *p != '\0')
          Py_LegacyWindowsFSEncodingFlag = add_flag(Py_LegacyWindowsFSEncodingFlag, p);
      if ((p = Py_GETENV("PYTHONLEGACYWINDOWSSTDIO")) && *p != '\0')
          Py_LegacyWindowsStdioFlag = add_flag(Py_LegacyWindowsStdioFlag, p);
  #endif
  
      _PyRandom_Init();
  
      interp = PyInterpreterState_New();
      if (interp == NULL)
          Py_FatalError("Py_Initialize: can't make first interpreter");
  
      tstate = PyThreadState_New(interp);
      if (tstate == NULL)
          Py_FatalError("Py_Initialize: can't make first thread");
      (void) PyThreadState_Swap(tstate);
  
  #ifdef WITH_THREAD
      /* We can't call _PyEval_FiniThreads() in Py_FinalizeEx because
         destroying the GIL might fail when it is being referenced from
         another running thread (see issue #9901).
         Instead we destroy the previously created GIL here, which ensures
         that we can call Py_Initialize / Py_FinalizeEx multiple times. */
      _PyEval_FiniThreads();
  
      /* Auto-thread-state API */
      _PyGILState_Init(interp, tstate);
  #endif /* WITH_THREAD */
  
      _Py_ReadyTypes();
  
      if (!_PyFrame_Init())
          Py_FatalError("Py_Initialize: can't init frames");
  
      if (!_PyLong_Init())
          Py_FatalError("Py_Initialize: can't init longs");
  
      if (!PyByteArray_Init())
          Py_FatalError("Py_Initialize: can't init bytearray");
  
      if (!_PyFloat_Init())
          Py_FatalError("Py_Initialize: can't init float");
  
      interp->modules = PyDict_New();
      if (interp->modules == NULL)
          Py_FatalError("Py_Initialize: can't make modules dictionary");
  
      /* Init Unicode implementation; relies on the codec registry */
      if (_PyUnicode_Init() < 0)
          Py_FatalError("Py_Initialize: can't initialize unicode");
      if (_PyStructSequence_Init() < 0)
          Py_FatalError("Py_Initialize: can't initialize structseq");
  
      bimod = _PyBuiltin_Init();
      if (bimod == NULL)
          Py_FatalError("Py_Initialize: can't initialize builtins modules");
      _PyImport_FixupBuiltin(bimod, "builtins");
      interp->builtins = PyModule_GetDict(bimod);
      if (interp->builtins == NULL)
          Py_FatalError("Py_Initialize: can't initialize builtins dict");
      Py_INCREF(interp->builtins);
  
      /* initialize builtin exceptions */
      _PyExc_Init(bimod);
  
      sysmod = _PySys_Init();
      if (sysmod == NULL)
          Py_FatalError("Py_Initialize: can't initialize sys");
      interp->sysdict = PyModule_GetDict(sysmod);
      if (interp->sysdict == NULL)
          Py_FatalError("Py_Initialize: can't initialize sys dict");
      Py_INCREF(interp->sysdict);
      _PyImport_FixupBuiltin(sysmod, "sys");
      PySys_SetPath(Py_GetPath());
      PyDict_SetItemString(interp->sysdict, "modules",
                           interp->modules);
  
      /* Set up a preliminary stderr printer until we have enough
         infrastructure for the io module in place. */
      pstderr = PyFile_NewStdPrinter(fileno(stderr));
      if (pstderr == NULL)
          Py_FatalError("Py_Initialize: can't set preliminary stderr");
      _PySys_SetObjectId(&PyId_stderr, pstderr);
      PySys_SetObject("__stderr__", pstderr);
      Py_DECREF(pstderr);
  
      _PyImport_Init();
  
      _PyImportHooks_Init();
  
      /* Initialize _warnings. */
      _PyWarnings_Init();
  
      if (!install_importlib)
          return;
  
      if (_PyTime_Init() < 0)
          Py_FatalError("Py_Initialize: can't initialize time");
  
      import_init(interp, sysmod);
  
      /* initialize the faulthandler module */
      if (_PyFaulthandler_Init())
          Py_FatalError("Py_Initialize: can't initialize faulthandler");
  
      if (initfsencoding(interp) < 0)
          Py_FatalError("Py_Initialize: unable to load the file system codec");
  
      if (install_sigs)
          initsigs(); /* Signal handling stuff, including initintr() */
  
      if (_PyTraceMalloc_Init() < 0)
          Py_FatalError("Py_Initialize: can't initialize tracemalloc");
  
      initmain(interp); /* Module __main__ */
      if (initstdio() < 0)
          Py_FatalError(
              "Py_Initialize: can't initialize sys standard streams");
  
      /* Initialize warnings. */
      if (PySys_HasWarnOptions()) {
          PyObject *warnings_module = PyImport_ImportModule("warnings");
          if (warnings_module == NULL) {
              fprintf(stderr, "'import warnings' failed; traceback:\n");
              PyErr_Print();
          }
          Py_XDECREF(warnings_module);
      }
  
      if (!Py_NoSiteFlag)
          initsite(); /* Module site */
  }
  
  void
  Py_InitializeEx(int install_sigs)
  {
      _Py_InitializeEx_Private(install_sigs, 1);
  }
  
  void
  Py_Initialize(void)
  {
      Py_InitializeEx(1);
  }
  
  
  #ifdef COUNT_ALLOCS
  extern void dump_counts(FILE*);
  #endif
  
  /* Flush stdout and stderr */
  
  static int
  file_is_closed(PyObject *fobj)
  {
      int r;
      PyObject *tmp = PyObject_GetAttrString(fobj, "closed");
      if (tmp == NULL) {
          PyErr_Clear();
          return 0;
      }
      r = PyObject_IsTrue(tmp);
      Py_DECREF(tmp);
      if (r < 0)
          PyErr_Clear();
      return r > 0;
  }
  
  static int
  flush_std_files(void)
  {
      PyObject *fout = _PySys_GetObjectId(&PyId_stdout);
      PyObject *ferr = _PySys_GetObjectId(&PyId_stderr);
      PyObject *tmp;
      int status = 0;
  
      if (fout != NULL && fout != Py_None && !file_is_closed(fout)) {
          tmp = _PyObject_CallMethodId(fout, &PyId_flush, NULL);
          if (tmp == NULL) {
              PyErr_WriteUnraisable(fout);
              status = -1;
          }
          else
              Py_DECREF(tmp);
      }
  
      if (ferr != NULL && ferr != Py_None && !file_is_closed(ferr)) {
          tmp = _PyObject_CallMethodId(ferr, &PyId_flush, NULL);
          if (tmp == NULL) {
              PyErr_Clear();
              status = -1;
          }
          else
              Py_DECREF(tmp);
      }
  
      return status;
  }
  
  /* Undo the effect of Py_Initialize().
  
     Beware: if multiple interpreter and/or thread states exist, these
     are not wiped out; only the current thread and interpreter state
     are deleted.  But since everything else is deleted, those other
     interpreter and thread states should no longer be used.
  
     (XXX We should do better, e.g. wipe out all interpreters and
     threads.)
  
     Locking: as above.
  
  */
  
  int
  Py_FinalizeEx(void)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate;
      int status = 0;
  
      if (!initialized)
          return status;
  
      wait_for_thread_shutdown();
  
      /* The interpreter is still entirely intact at this point, and the
       * exit funcs may be relying on that.  In particular, if some thread
       * or exit func is still waiting to do an import, the import machinery
       * expects Py_IsInitialized() to return true.  So don't say the
       * interpreter is uninitialized until after the exit funcs have run.
       * Note that Threading.py uses an exit func to do a join on all the
       * threads created thru it, so this also protects pending imports in
       * the threads created via Threading.
       */
      call_py_exitfuncs();
  
      /* Get current thread state and interpreter pointer */
      tstate = PyThreadState_GET();
      interp = tstate->interp;
  
      /* Remaining threads (e.g. daemon threads) will automatically exit
         after taking the GIL (in PyEval_RestoreThread()). */
      _Py_Finalizing = tstate;
      initialized = 0;
  
      /* Flush sys.stdout and sys.stderr */
      if (flush_std_files() < 0) {
          status = -1;
      }
  
      /* Disable signal handling */
      PyOS_FiniInterrupts();
  
      /* Collect garbage.  This may call finalizers; it's nice to call these
       * before all modules are destroyed.
       * XXX If a __del__ or weakref callback is triggered here, and tries to
       * XXX import a module, bad things can happen, because Python no
       * XXX longer believes it's initialized.
       * XXX     Fatal Python error: Interpreter not initialized (version mismatch?)
       * XXX is easy to provoke that way.  I've also seen, e.g.,
       * XXX     Exception exceptions.ImportError: 'No module named sha'
       * XXX         in <function callback at 0x008F5718> ignored
       * XXX but I'm unclear on exactly how that one happens.  In any case,
       * XXX I haven't seen a real-life report of either of these.
       */
      _PyGC_CollectIfEnabled();
  #ifdef COUNT_ALLOCS
      /* With COUNT_ALLOCS, it helps to run GC multiple times:
         each collection might release some types from the type
         list, so they become garbage. */
      while (_PyGC_CollectIfEnabled() > 0)
          /* nothing */;
  #endif
      /* Destroy all modules */
      PyImport_Cleanup();
  
      /* Flush sys.stdout and sys.stderr (again, in case more was printed) */
      if (flush_std_files() < 0) {
          status = -1;
      }
  
      /* Collect final garbage.  This disposes of cycles created by
       * class definitions, for example.
       * XXX This is disabled because it caused too many problems.  If
       * XXX a __del__ or weakref callback triggers here, Python code has
       * XXX a hard time running, because even the sys module has been
       * XXX cleared out (sys.stdout is gone, sys.excepthook is gone, etc).
       * XXX One symptom is a sequence of information-free messages
       * XXX coming from threads (if a __del__ or callback is invoked,
       * XXX other threads can execute too, and any exception they encounter
       * XXX triggers a comedy of errors as subsystem after subsystem
       * XXX fails to find what it *expects* to find in sys to help report
       * XXX the exception and consequent unexpected failures).  I've also
       * XXX seen segfaults then, after adding print statements to the
       * XXX Python code getting called.
       */
  #if 0
      _PyGC_CollectIfEnabled();
  #endif
  
      /* Disable tracemalloc after all Python objects have been destroyed,
         so it is possible to use tracemalloc in objects destructor. */
      _PyTraceMalloc_Fini();
  
      /* Destroy the database used by _PyImport_{Fixup,Find}Extension */
      _PyImport_Fini();
  
      /* Cleanup typeobject.c's internal caches. */
      _PyType_Fini();
  
      /* unload faulthandler module */
      _PyFaulthandler_Fini();
  
      /* Debugging stuff */
  #ifdef COUNT_ALLOCS
      dump_counts(stderr);
  #endif
      /* dump hash stats */
      _PyHash_Fini();
  
      _PY_DEBUG_PRINT_TOTAL_REFS();
  
  #ifdef Py_TRACE_REFS
      /* Display all objects still alive -- this can invoke arbitrary
       * __repr__ overrides, so requires a mostly-intact interpreter.
       * Alas, a lot of stuff may still be alive now that will be cleaned
       * up later.
       */
      if (Py_GETENV("PYTHONDUMPREFS"))
          _Py_PrintReferences(stderr);
  #endif /* Py_TRACE_REFS */
  
      /* Clear interpreter state and all thread states. */
      PyInterpreterState_Clear(interp);
  
      /* Now we decref the exception classes.  After this point nothing
         can raise an exception.  That's okay, because each Fini() method
         below has been checked to make sure no exceptions are ever
         raised.
      */
  
      _PyExc_Fini();
  
      /* Sundry finalizers */
      PyMethod_Fini();
      PyFrame_Fini();
      PyCFunction_Fini();
      PyTuple_Fini();
      PyList_Fini();
      PySet_Fini();
      PyBytes_Fini();
      PyByteArray_Fini();
      PyLong_Fini();
      PyFloat_Fini();
      PyDict_Fini();
      PySlice_Fini();
      _PyGC_Fini();
      _PyRandom_Fini();
      _PyArg_Fini();
      PyAsyncGen_Fini();
  
      /* Cleanup Unicode implementation */
      _PyUnicode_Fini();
  
      /* reset file system default encoding */
      if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding) {
          PyMem_RawFree((char*)Py_FileSystemDefaultEncoding);
          Py_FileSystemDefaultEncoding = NULL;
      }
  
      /* XXX Still allocated:
         - various static ad-hoc pointers to interned strings
         - int and float free list blocks
         - whatever various modules and libraries allocate
      */
  
      PyGrammar_RemoveAccelerators(&_PyParser_Grammar);
  
      /* Cleanup auto-thread-state */
  #ifdef WITH_THREAD
      _PyGILState_Fini();
  #endif /* WITH_THREAD */
  
      /* Delete current thread. After this, many C API calls become crashy. */
      PyThreadState_Swap(NULL);
  
      PyInterpreterState_Delete(interp);
  
  #ifdef Py_TRACE_REFS
      /* Display addresses (& refcnts) of all objects still alive.
       * An address can be used to find the repr of the object, printed
       * above by _Py_PrintReferences.
       */
      if (Py_GETENV("PYTHONDUMPREFS"))
          _Py_PrintReferenceAddresses(stderr);
  #endif /* Py_TRACE_REFS */
  #ifdef WITH_PYMALLOC
      if (_PyMem_PymallocEnabled()) {
          char *opt = Py_GETENV("PYTHONMALLOCSTATS");
          if (opt != NULL && *opt != '\0')
              _PyObject_DebugMallocStats(stderr);
      }
  #endif
  
      call_ll_exitfuncs();
      return status;
  }
  
  void
  Py_Finalize(void)
  {
      Py_FinalizeEx();
  }
  
  /* Create and initialize a new interpreter and thread, and return the
     new thread.  This requires that Py_Initialize() has been called
     first.
  
     Unsuccessful initialization yields a NULL pointer.  Note that *no*
     exception information is available even in this case -- the
     exception information is held in the thread, and there is no
     thread.
  
     Locking: as above.
  
  */
  
  PyThreadState *
  Py_NewInterpreter(void)
  {
      PyInterpreterState *interp;
      PyThreadState *tstate, *save_tstate;
      PyObject *bimod, *sysmod;
  
      if (!initialized)
          Py_FatalError("Py_NewInterpreter: call Py_Initialize first");
  
  #ifdef WITH_THREAD
      /* Issue #10915, #15751: The GIL API doesn't work with multiple
         interpreters: disable PyGILState_Check(). */
      _PyGILState_check_enabled = 0;
  #endif
  
      interp = PyInterpreterState_New();
      if (interp == NULL)
          return NULL;
  
      tstate = PyThreadState_New(interp);
      if (tstate == NULL) {
          PyInterpreterState_Delete(interp);
          return NULL;
      }
  
      save_tstate = PyThreadState_Swap(tstate);
  
      /* XXX The following is lax in error checking */
  
      interp->modules = PyDict_New();
  
      bimod = _PyImport_FindBuiltin("builtins");
      if (bimod != NULL) {
          interp->builtins = PyModule_GetDict(bimod);
          if (interp->builtins == NULL)
              goto handle_error;
          Py_INCREF(interp->builtins);
      }
  
      /* initialize builtin exceptions */
      _PyExc_Init(bimod);
  
      sysmod = _PyImport_FindBuiltin("sys");
      if (bimod != NULL && sysmod != NULL) {
          PyObject *pstderr;
  
          interp->sysdict = PyModule_GetDict(sysmod);
          if (interp->sysdict == NULL)
              goto handle_error;
          Py_INCREF(interp->sysdict);
          PySys_SetPath(Py_GetPath());
          PyDict_SetItemString(interp->sysdict, "modules",
                               interp->modules);
          /* Set up a preliminary stderr printer until we have enough
             infrastructure for the io module in place. */
          pstderr = PyFile_NewStdPrinter(fileno(stderr));
          if (pstderr == NULL)
              Py_FatalError("Py_Initialize: can't set preliminary stderr");
          _PySys_SetObjectId(&PyId_stderr, pstderr);
          PySys_SetObject("__stderr__", pstderr);
          Py_DECREF(pstderr);
  
          _PyImportHooks_Init();
  
          import_init(interp, sysmod);
  
          if (initfsencoding(interp) < 0)
              goto handle_error;
  
          if (initstdio() < 0)
              Py_FatalError(
                  "Py_Initialize: can't initialize sys standard streams");
          initmain(interp);
          if (!Py_NoSiteFlag)
              initsite();
      }
  
      if (!PyErr_Occurred())
          return tstate;
  
  handle_error:
      /* Oops, it didn't work.  Undo it all. */
  
      PyErr_PrintEx(0);
      PyThreadState_Clear(tstate);
      PyThreadState_Swap(save_tstate);
      PyThreadState_Delete(tstate);
      PyInterpreterState_Delete(interp);
  
      return NULL;
  }
  
  /* Delete an interpreter and its last thread.  This requires that the
     given thread state is current, that the thread has no remaining
     frames, and that it is its interpreter's only remaining thread.
     It is a fatal error to violate these constraints.
  
     (Py_FinalizeEx() doesn't have these constraints -- it zaps
     everything, regardless.)
  
     Locking: as above.
  
  */
  
  void
  Py_EndInterpreter(PyThreadState *tstate)
  {
      PyInterpreterState *interp = tstate->interp;
  
      if (tstate != PyThreadState_GET())
          Py_FatalError("Py_EndInterpreter: thread is not current");
      if (tstate->frame != NULL)
          Py_FatalError("Py_EndInterpreter: thread still has a frame");
  
      wait_for_thread_shutdown();
  
      if (tstate != interp->tstate_head || tstate->next != NULL)
          Py_FatalError("Py_EndInterpreter: not the last thread");
  
      PyImport_Cleanup();
      PyInterpreterState_Clear(interp);
      PyThreadState_Swap(NULL);
      PyInterpreterState_Delete(interp);
  }
  
  #ifdef MS_WINDOWS
  static wchar_t *progname = L"python";
  #else
  static wchar_t *progname = L"python3";
  #endif
  
  void
  Py_SetProgramName(wchar_t *pn)
  {
      if (pn && *pn)
          progname = pn;
  }
  
  wchar_t *
  Py_GetProgramName(void)
  {
      return progname;
  }
  
  static wchar_t *default_home = NULL;
  static wchar_t env_home[MAXPATHLEN+1];
  
  void
  Py_SetPythonHome(wchar_t *home)
  {
      default_home = home;
  }
  
  wchar_t *
  Py_GetPythonHome(void)
  {
      wchar_t *home = default_home;
      if (home == NULL && !Py_IgnoreEnvironmentFlag) {
          char* chome = Py_GETENV("PYTHONHOME");
          if (chome) {
              size_t size = Py_ARRAY_LENGTH(env_home);
              size_t r = mbstowcs(env_home, chome, size);
              if (r != (size_t)-1 && r < size)
                  home = env_home;
          }
  
      }
      return home;
  }
  
  /* Create __main__ module */
  
  static void
  initmain(PyInterpreterState *interp)
  {
      PyObject *m, *d, *loader, *ann_dict;
      m = PyImport_AddModule("__main__");
      if (m == NULL)
          Py_FatalError("can't create __main__ module");
      d = PyModule_GetDict(m);
      ann_dict = PyDict_New();
      if ((ann_dict == NULL) ||
          (PyDict_SetItemString(d, "__annotations__", ann_dict) < 0)) {
          Py_FatalError("Failed to initialize __main__.__annotations__");
      }
      Py_DECREF(ann_dict);
      if (PyDict_GetItemString(d, "__builtins__") == NULL) {
          PyObject *bimod = PyImport_ImportModule("builtins");
          if (bimod == NULL) {
              Py_FatalError("Failed to retrieve builtins module");
          }
          if (PyDict_SetItemString(d, "__builtins__", bimod) < 0) {
              Py_FatalError("Failed to initialize __main__.__builtins__");
          }
          Py_DECREF(bimod);
      }
      /* Main is a little special - imp.is_builtin("__main__") will return
       * False, but BuiltinImporter is still the most appropriate initial
       * setting for its __loader__ attribute. A more suitable value will
       * be set if __main__ gets further initialized later in the startup
       * process.
       */
      loader = PyDict_GetItemString(d, "__loader__");
      if (loader == NULL || loader == Py_None) {
          PyObject *loader = PyObject_GetAttrString(interp->importlib,
                                                    "BuiltinImporter");
          if (loader == NULL) {
              Py_FatalError("Failed to retrieve BuiltinImporter");
          }
          if (PyDict_SetItemString(d, "__loader__", loader) < 0) {
              Py_FatalError("Failed to initialize __main__.__loader__");
          }
          Py_DECREF(loader);
      }
  }
  
  static int
  initfsencoding(PyInterpreterState *interp)
  {
      PyObject *codec;
  
  #ifdef MS_WINDOWS
      if (Py_LegacyWindowsFSEncodingFlag)
      {
          Py_FileSystemDefaultEncoding = "mbcs";
          Py_FileSystemDefaultEncodeErrors = "replace";
      }
      else
      {
          Py_FileSystemDefaultEncoding = "utf-8";
          Py_FileSystemDefaultEncodeErrors = "surrogatepass";
      }
  #else
      if (Py_FileSystemDefaultEncoding == NULL)
      {
          Py_FileSystemDefaultEncoding = get_locale_encoding();
          if (Py_FileSystemDefaultEncoding == NULL)
              Py_FatalError("Py_Initialize: Unable to get the locale encoding");
  
          Py_HasFileSystemDefaultEncoding = 0;
          interp->fscodec_initialized = 1;
          return 0;
      }
  #endif
  
      /* the encoding is mbcs, utf-8 or ascii */
      codec = _PyCodec_Lookup(Py_FileSystemDefaultEncoding);
      if (!codec) {
          /* Such error can only occurs in critical situations: no more
           * memory, import a module of the standard library failed,
           * etc. */
          return -1;
      }
      Py_DECREF(codec);
      interp->fscodec_initialized = 1;
      return 0;
  }
  
  /* Import the site module (not into __main__ though) */
  
  static void
  initsite(void)
  {
      PyObject *m;
      m = PyImport_ImportModule("site");
      if (m == NULL) {
          fprintf(stderr, "Failed to import the site module\n");
          PyErr_Print();
          Py_Finalize();
          exit(1);
      }
      else {
          Py_DECREF(m);
      }
  }
  
  /* Check if a file descriptor is valid or not.
     Return 0 if the file descriptor is invalid, return non-zero otherwise. */
  static int
  is_valid_fd(int fd)
  {
      int fd2;
      if (fd < 0)
          return 0;
      _Py_BEGIN_SUPPRESS_IPH
      /* Prefer dup() over fstat(). fstat() can require input/output whereas
         dup() doesn't, there is a low risk of EMFILE/ENFILE at Python
         startup. */
      fd2 = dup(fd);
      if (fd2 >= 0)
          close(fd2);
      _Py_END_SUPPRESS_IPH
      return fd2 >= 0;
  }
  
  /* returns Py_None if the fd is not valid */
  static PyObject*
  create_stdio(PyObject* io,
      int fd, int write_mode, const char* name,
      const char* encoding, const char* errors)
  {
      PyObject *buf = NULL, *stream = NULL, *text = NULL, *raw = NULL, *res;
      const char* mode;
      const char* newline;
      PyObject *line_buffering;
      int buffering, isatty;
      _Py_IDENTIFIER(open);
      _Py_IDENTIFIER(isatty);
      _Py_IDENTIFIER(TextIOWrapper);
      _Py_IDENTIFIER(mode);
  
      if (!is_valid_fd(fd))
          Py_RETURN_NONE;
  
      /* stdin is always opened in buffered mode, first because it shouldn't
         make a difference in common use cases, second because TextIOWrapper
         depends on the presence of a read1() method which only exists on
         buffered streams.
      */
      if (Py_UnbufferedStdioFlag && write_mode)
          buffering = 0;
      else
          buffering = -1;
      if (write_mode)
          mode = "wb";
      else
          mode = "rb";
      buf = _PyObject_CallMethodId(io, &PyId_open, "isiOOOi",
                                   fd, mode, buffering,
                                   Py_None, Py_None, /* encoding, errors */
                                   Py_None, 0); /* newline, closefd */
      if (buf == NULL)
          goto error;
  
      if (buffering) {
          _Py_IDENTIFIER(raw);
          raw = _PyObject_GetAttrId(buf, &PyId_raw);
          if (raw == NULL)
              goto error;
      }
      else {
          raw = buf;
          Py_INCREF(raw);
      }
  
  #ifdef MS_WINDOWS
      /* Windows console IO is always UTF-8 encoded */
      if (PyWindowsConsoleIO_Check(raw))
          encoding = "utf-8";
  #endif
  
      text = PyUnicode_FromString(name);
      if (text == NULL || _PyObject_SetAttrId(raw, &PyId_name, text) < 0)
          goto error;
      res = _PyObject_CallMethodId(raw, &PyId_isatty, NULL);
      if (res == NULL)
          goto error;
      isatty = PyObject_IsTrue(res);
      Py_DECREF(res);
      if (isatty == -1)
          goto error;
      if (isatty || Py_UnbufferedStdioFlag)
          line_buffering = Py_True;
      else
          line_buffering = Py_False;
  
      Py_CLEAR(raw);
      Py_CLEAR(text);
  
  #ifdef MS_WINDOWS
      /* sys.stdin: enable universal newline mode, translate "\r\n" and "\r"
         newlines to "\n".
         sys.stdout and sys.stderr: translate "\n" to "\r\n". */
      newline = NULL;
  #else
      /* sys.stdin: split lines at "\n".
         sys.stdout and sys.stderr: don't translate newlines (use "\n"). */
      newline = "\n";
  #endif
  
      stream = _PyObject_CallMethodId(io, &PyId_TextIOWrapper, "OsssO",
                                      buf, encoding, errors,
                                      newline, line_buffering);
      Py_CLEAR(buf);
      if (stream == NULL)
          goto error;
  
      if (write_mode)
          mode = "w";
      else
          mode = "r";
      text = PyUnicode_FromString(mode);
      if (!text || _PyObject_SetAttrId(stream, &PyId_mode, text) < 0)
          goto error;
      Py_CLEAR(text);
      return stream;
  
  error:
      Py_XDECREF(buf);
      Py_XDECREF(stream);
      Py_XDECREF(text);
      Py_XDECREF(raw);
  
      if (PyErr_ExceptionMatches(PyExc_OSError) && !is_valid_fd(fd)) {
          /* Issue #24891: the file descriptor was closed after the first
             is_valid_fd() check was called. Ignore the OSError and set the
             stream to None. */
          PyErr_Clear();
          Py_RETURN_NONE;
      }
      return NULL;
  }
  
  /* Initialize sys.stdin, stdout, stderr and builtins.open */
  static int
  initstdio(void)
  {
      PyObject *iomod = NULL, *wrapper;
      PyObject *bimod = NULL;
      PyObject *m;
      PyObject *std = NULL;
      int status = 0, fd;
      PyObject * encoding_attr;
      char *pythonioencoding = NULL, *encoding, *errors;
  
      /* Hack to avoid a nasty recursion issue when Python is invoked
         in verbose mode: pre-import the Latin-1 and UTF-8 codecs */
      if ((m = PyImport_ImportModule("encodings.utf_8")) == NULL) {
          goto error;
      }
      Py_DECREF(m);
  
      if (!(m = PyImport_ImportModule("encodings.latin_1"))) {
          goto error;
      }
      Py_DECREF(m);
  
      if (!(bimod = PyImport_ImportModule("builtins"))) {
          goto error;
      }
  
      if (!(iomod = PyImport_ImportModule("io"))) {
          goto error;
      }
      if (!(wrapper = PyObject_GetAttrString(iomod, "OpenWrapper"))) {
          goto error;
      }
  
      /* Set builtins.open */
      if (PyObject_SetAttrString(bimod, "open", wrapper) == -1) {
          Py_DECREF(wrapper);
          goto error;
      }
      Py_DECREF(wrapper);
  
      encoding = _Py_StandardStreamEncoding;
      errors = _Py_StandardStreamErrors;
      if (!encoding || !errors) {
          pythonioencoding = Py_GETENV("PYTHONIOENCODING");
          if (pythonioencoding) {
              char *err;
              pythonioencoding = _PyMem_Strdup(pythonioencoding);
              if (pythonioencoding == NULL) {
                  PyErr_NoMemory();
                  goto error;
              }
              err = strchr(pythonioencoding, ':');
              if (err) {
                  *err = '\0';
                  err++;
                  if (*err && !errors) {
                      errors = err;
                  }
              }
              if (*pythonioencoding && !encoding) {
                  encoding = pythonioencoding;
              }
          }
          if (!errors && !(pythonioencoding && *pythonioencoding)) {
              /* When the LC_CTYPE locale is the POSIX locale ("C locale"),
                 stdin and stdout use the surrogateescape error handler by
                 default, instead of the strict error handler. */
              char *loc = setlocale(LC_CTYPE, NULL);
              if (loc != NULL && strcmp(loc, "C") == 0)
                  errors = "surrogateescape";
          }
      }
  
      /* Set sys.stdin */
      fd = fileno(stdin);
      /* Under some conditions stdin, stdout and stderr may not be connected
       * and fileno() may point to an invalid file descriptor. For example
       * GUI apps don't have valid standard streams by default.
       */
      std = create_stdio(iomod, fd, 0, "<stdin>", encoding, errors);
      if (std == NULL)
          goto error;
      PySys_SetObject("__stdin__", std);
      _PySys_SetObjectId(&PyId_stdin, std);
      Py_DECREF(std);
  
      /* Set sys.stdout */
      fd = fileno(stdout);
      std = create_stdio(iomod, fd, 1, "<stdout>", encoding, errors);
      if (std == NULL)
          goto error;
      PySys_SetObject("__stdout__", std);
      _PySys_SetObjectId(&PyId_stdout, std);
      Py_DECREF(std);
  
  #if 1 /* Disable this if you have trouble debugging bootstrap stuff */
      /* Set sys.stderr, replaces the preliminary stderr */
      fd = fileno(stderr);
      std = create_stdio(iomod, fd, 1, "<stderr>", encoding, "backslashreplace");
      if (std == NULL)
          goto error;
  
      /* Same as hack above, pre-import stderr's codec to avoid recursion
         when import.c tries to write to stderr in verbose mode. */
      encoding_attr = PyObject_GetAttrString(std, "encoding");
      if (encoding_attr != NULL) {
          const char *std_encoding = PyUnicode_AsUTF8(encoding_attr);
          if (std_encoding != NULL) {
              PyObject *codec_info = _PyCodec_Lookup(std_encoding);
              Py_XDECREF(codec_info);
          }
          Py_DECREF(encoding_attr);
      }
      PyErr_Clear();  /* Not a fatal error if codec isn't available */
  
      if (PySys_SetObject("__stderr__", std) < 0) {
          Py_DECREF(std);
          goto error;
      }
      if (_PySys_SetObjectId(&PyId_stderr, std) < 0) {
          Py_DECREF(std);
          goto error;
      }
      Py_DECREF(std);
  #endif
  
      if (0) {
    error:
          status = -1;
      }
  
      /* We won't need them anymore. */
      if (_Py_StandardStreamEncoding) {
          PyMem_RawFree(_Py_StandardStreamEncoding);
          _Py_StandardStreamEncoding = NULL;
      }
      if (_Py_StandardStreamErrors) {
          PyMem_RawFree(_Py_StandardStreamErrors);
          _Py_StandardStreamErrors = NULL;
      }
      PyMem_Free(pythonioencoding);
      Py_XDECREF(bimod);
      Py_XDECREF(iomod);
      return status;
  }
  
  
  static void
  _Py_FatalError_DumpTracebacks(int fd)
  {
      fputc('\n', stderr);
      fflush(stderr);
  
      /* display the current Python stack */
      _Py_DumpTracebackThreads(fd, NULL, NULL);
  }
  
  /* Print the current exception (if an exception is set) with its traceback,
     or display the current Python stack.
  
     Don't call PyErr_PrintEx() and the except hook, because Py_FatalError() is
     called on catastrophic cases.
  
     Return 1 if the traceback was displayed, 0 otherwise. */
  
  static int
  _Py_FatalError_PrintExc(int fd)
  {
      PyObject *ferr, *res;
      PyObject *exception, *v, *tb;
      int has_tb;
  
      if (PyThreadState_GET() == NULL) {
          /* The GIL is released: trying to acquire it is likely to deadlock,
             just give up. */
          return 0;
      }
  
      PyErr_Fetch(&exception, &v, &tb);
      if (exception == NULL) {
          /* No current exception */
          return 0;
      }
  
      ferr = _PySys_GetObjectId(&PyId_stderr);
      if (ferr == NULL || ferr == Py_None) {
          /* sys.stderr is not set yet or set to None,
             no need to try to display the exception */
          return 0;
      }
  
      PyErr_NormalizeException(&exception, &v, &tb);
      if (tb == NULL) {
          tb = Py_None;
          Py_INCREF(tb);
      }
      PyException_SetTraceback(v, tb);
      if (exception == NULL) {
          /* PyErr_NormalizeException() failed */
          return 0;
      }
  
      has_tb = (tb != Py_None);
      PyErr_Display(exception, v, tb);
      Py_XDECREF(exception);
      Py_XDECREF(v);
      Py_XDECREF(tb);
  
      /* sys.stderr may be buffered: call sys.stderr.flush() */
      res = _PyObject_CallMethodId(ferr, &PyId_flush, NULL);
      if (res == NULL)
          PyErr_Clear();
      else
          Py_DECREF(res);
  
      return has_tb;
  }
  
  /* Print fatal error message and abort */
  
  void
  Py_FatalError(const char *msg)
  {
      const int fd = fileno(stderr);
      static int reentrant = 0;
  #ifdef MS_WINDOWS
      size_t len;
      WCHAR* buffer;
      size_t i;
  #endif
  
      if (reentrant) {
          /* Py_FatalError() caused a second fatal error.
             Example: flush_std_files() raises a recursion error. */
          goto exit;
      }
      reentrant = 1;
  
      fprintf(stderr, "Fatal Python error: %s\n", msg);
      fflush(stderr); /* it helps in Windows debug build */
  
      /* Print the exception (if an exception is set) with its traceback,
       * or display the current Python stack. */
      if (!_Py_FatalError_PrintExc(fd))
          _Py_FatalError_DumpTracebacks(fd);
  
      /* The main purpose of faulthandler is to display the traceback. We already
       * did our best to display it. So faulthandler can now be disabled.
       * (Don't trigger it on abort().) */
      _PyFaulthandler_Fini();
  
      /* Check if the current Python thread hold the GIL */
      if (PyThreadState_GET() != NULL) {
          /* Flush sys.stdout and sys.stderr */
          flush_std_files();
      }
  
  #ifdef MS_WINDOWS
      len = strlen(msg);
  
      /* Convert the message to wchar_t. This uses a simple one-to-one
      conversion, assuming that the this error message actually uses ASCII
      only. If this ceases to be true, we will have to convert. */
      buffer = alloca( (len+1) * (sizeof *buffer));
      for( i=0; i<=len; ++i)
          buffer[i] = msg[i];
      OutputDebugStringW(L"Fatal Python error: ");
      OutputDebugStringW(buffer);
      OutputDebugStringW(L"\n");
  #endif /* MS_WINDOWS */
  
  exit:
  #if defined(MS_WINDOWS) && defined(_DEBUG)
      DebugBreak();
  #endif
      abort();
  }
  
  /* Clean up and exit */
  
  #ifdef WITH_THREAD
  #  include "pythread.h"
  #endif
  
  static void (*pyexitfunc)(void) = NULL;
  /* For the atexit module. */
  void _Py_PyAtExit(void (*func)(void))
  {
      pyexitfunc = func;
  }
  
  static void
  call_py_exitfuncs(void)
  {
      if (pyexitfunc == NULL)
          return;
  
      (*pyexitfunc)();
      PyErr_Clear();
  }
  
  /* Wait until threading._shutdown completes, provided
     the threading module was imported in the first place.
     The shutdown routine will wait until all non-daemon
     "threading" threads have completed. */
  static void
  wait_for_thread_shutdown(void)
  {
  #ifdef WITH_THREAD
      _Py_IDENTIFIER(_shutdown);
      PyObject *result;
      PyThreadState *tstate = PyThreadState_GET();
      PyObject *threading = PyMapping_GetItemString(tstate->interp->modules,
                                                    "threading");
      if (threading == NULL) {
          /* threading not imported */
          PyErr_Clear();
          return;
      }
      result = _PyObject_CallMethodId(threading, &PyId__shutdown, NULL);
      if (result == NULL) {
          PyErr_WriteUnraisable(threading);
      }
      else {
          Py_DECREF(result);
      }
      Py_DECREF(threading);
  #endif
  }
  
  #define NEXITFUNCS 32
  static void (*exitfuncs[NEXITFUNCS])(void);
  static int nexitfuncs = 0;
  
  int Py_AtExit(void (*func)(void))
  {
      if (nexitfuncs >= NEXITFUNCS)
          return -1;
      exitfuncs[nexitfuncs++] = func;
      return 0;
  }
  
  static void
  call_ll_exitfuncs(void)
  {
      while (nexitfuncs > 0)
          (*exitfuncs[--nexitfuncs])();
  
      fflush(stdout);
      fflush(stderr);
  }
  
  void
  Py_Exit(int sts)
  {
      if (Py_FinalizeEx() < 0) {
          sts = 120;
      }
  
      exit(sts);
  }
  
  static void
  initsigs(void)
  {
  #ifdef SIGPIPE
      PyOS_setsig(SIGPIPE, SIG_IGN);
  #endif
  #ifdef SIGXFZ
      PyOS_setsig(SIGXFZ, SIG_IGN);
  #endif
  #ifdef SIGXFSZ
      PyOS_setsig(SIGXFSZ, SIG_IGN);
  #endif
      PyOS_InitInterrupts(); /* May imply initsignal() */
      if (PyErr_Occurred()) {
          Py_FatalError("Py_Initialize: can't import signal");
      }
  }
  
  
  /* Restore signals that the interpreter has called SIG_IGN on to SIG_DFL.
   *
   * All of the code in this function must only use async-signal-safe functions,
   * listed at `man 7 signal` or
   * http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html.
   */
  void
  _Py_RestoreSignals(void)
  {
  #ifdef SIGPIPE
      PyOS_setsig(SIGPIPE, SIG_DFL);
  #endif
  #ifdef SIGXFZ
      PyOS_setsig(SIGXFZ, SIG_DFL);
  #endif
  #ifdef SIGXFSZ
      PyOS_setsig(SIGXFSZ, SIG_DFL);
  #endif
  }
  
  
  /*
   * The file descriptor fd is considered ``interactive'' if either
   *   a) isatty(fd) is TRUE, or
   *   b) the -i flag was given, and the filename associated with
   *      the descriptor is NULL or "<stdin>" or "???".
   */
  int
  Py_FdIsInteractive(FILE *fp, const char *filename)
  {
      if (isatty((int)fileno(fp)))
          return 1;
      if (!Py_InteractiveFlag)
          return 0;
      return (filename == NULL) ||
             (strcmp(filename, "<stdin>") == 0) ||
             (strcmp(filename, "???") == 0);
  }
  
  
  /* Wrappers around sigaction() or signal(). */
  
  PyOS_sighandler_t
  PyOS_getsig(int sig)
  {
  #ifdef HAVE_SIGACTION
      struct sigaction context;
      if (sigaction(sig, NULL, &context) == -1)
          return SIG_ERR;
      return context.sa_handler;
  #else
      PyOS_sighandler_t handler;
  /* Special signal handling for the secure CRT in Visual Studio 2005 */
  #if defined(_MSC_VER) && _MSC_VER >= 1400
      switch (sig) {
      /* Only these signals are valid */
      case SIGINT:
      case SIGILL:
      case SIGFPE:
      case SIGSEGV:
      case SIGTERM:
      case SIGBREAK:
      case SIGABRT:
          break;
      /* Don't call signal() with other values or it will assert */
      default:
          return SIG_ERR;
      }
  #endif /* _MSC_VER && _MSC_VER >= 1400 */
      handler = signal(sig, SIG_IGN);
      if (handler != SIG_ERR)
          signal(sig, handler);
      return handler;
  #endif
  }
  
  /*
   * All of the code in this function must only use async-signal-safe functions,
   * listed at `man 7 signal` or
   * http://www.opengroup.org/onlinepubs/009695399/functions/xsh_chap02_04.html.
   */
  PyOS_sighandler_t
  PyOS_setsig(int sig, PyOS_sighandler_t handler)
  {
  #ifdef HAVE_SIGACTION
      /* Some code in Modules/signalmodule.c depends on sigaction() being
       * used here if HAVE_SIGACTION is defined.  Fix that if this code
       * changes to invalidate that assumption.
       */
      struct sigaction context, ocontext;
      context.sa_handler = handler;
      sigemptyset(&context.sa_mask);
      context.sa_flags = 0;
      if (sigaction(sig, &context, &ocontext) == -1)
          return SIG_ERR;
      return ocontext.sa_handler;
  #else
      PyOS_sighandler_t oldhandler;
      oldhandler = signal(sig, handler);
  #ifdef HAVE_SIGINTERRUPT
      siginterrupt(sig, 1);
  #endif
      return oldhandler;
  #endif
  }
  
  #ifdef __cplusplus
  }
  #endif
  