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python3.2  3.2.2
Defines | Functions | Variables
pythonrun.c File Reference
#include "Python.h"
#include "Python-ast.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"

Go to the source code of this file.

Defines

#define PRINT_TOTAL_REFS()
#define NEXITFUNCS   32

Functions

wchar_t * Py_GetPath (void)
static void initmain (void)
static int initfsencoding (PyInterpreterState *interp)
static void initsite (void)
static int initstdio (void)
static void flush_io (void)
static PyObjectrun_mod (mod_ty, const char *, PyObject *, PyObject *, PyCompilerFlags *, PyArena *)
static PyObjectrun_pyc_file (FILE *, const char *, PyObject *, PyObject *, PyCompilerFlags *)
static void err_input (perrdetail *)
static void initsigs (void)
static void call_py_exitfuncs (void)
static void wait_for_thread_shutdown (void)
static void call_ll_exitfuncs (void)
void _PyUnicode_Init (void)
void _PyUnicode_Fini (void)
int _PyLong_Init (void)
void PyLong_Fini (void)
PyObjectPyModule_GetWarningsModule (void)
int Py_IsInitialized (void)
static int add_flag (int flag, const char *envs)
static char * get_codec_name (const char *encoding)
void Py_InitializeEx (int install_sigs)
void Py_Initialize (void)
static void flush_std_files (void)
void Py_Finalize (void)
PyThreadStatePy_NewInterpreter (void)
void Py_EndInterpreter (PyThreadState *tstate)
void Py_SetProgramName (wchar_t *pn)
wchar_t * Py_GetProgramName (void)
void Py_SetPythonHome (wchar_t *home)
wchar_t * Py_GetPythonHome (void)
static PyObjectcreate_stdio (PyObject *io, int fd, int write_mode, char *name, char *encoding, char *errors)
int PyRun_AnyFileExFlags (FILE *fp, const char *filename, int closeit, PyCompilerFlags *flags)
int PyRun_InteractiveLoopFlags (FILE *fp, const char *filename, PyCompilerFlags *flags)
static int PARSER_FLAGS (PyCompilerFlags *flags)
int PyRun_InteractiveOneFlags (FILE *fp, const char *filename, PyCompilerFlags *flags)
static int maybe_pyc_file (FILE *fp, const char *filename, const char *ext, int closeit)
int PyRun_SimpleFileExFlags (FILE *fp, const char *filename, int closeit, PyCompilerFlags *flags)
int PyRun_SimpleStringFlags (const char *command, PyCompilerFlags *flags)
static int parse_syntax_error (PyObject *err, PyObject **message, const char **filename, int *lineno, int *offset, const char **text)
void PyErr_Print (void)
static void print_error_text (PyObject *f, int offset, const char *text)
static void handle_system_exit (void)
void PyErr_PrintEx (int set_sys_last_vars)
static void print_exception (PyObject *f, PyObject *value)
static void print_exception_recursive (PyObject *f, PyObject *value, PyObject *seen)
void PyErr_Display (PyObject *exception, PyObject *value, PyObject *tb)
PyObjectPyRun_StringFlags (const char *str, int start, PyObject *globals, PyObject *locals, PyCompilerFlags *flags)
PyObjectPyRun_FileExFlags (FILE *fp, const char *filename, int start, PyObject *globals, PyObject *locals, int closeit, PyCompilerFlags *flags)
PyObjectPy_CompileStringExFlags (const char *str, const char *filename, int start, PyCompilerFlags *flags, int optimize)
PyObjectPyCompileString (const char *str, const char *filename, int start)
struct symtablePy_SymtableString (const char *str, const char *filename, int start)
mod_ty PyParser_ASTFromString (const char *s, const char *filename, int start, PyCompilerFlags *flags, PyArena *arena)
mod_ty PyParser_ASTFromFile (FILE *fp, const char *filename, const char *enc, int start, char *ps1, char *ps2, PyCompilerFlags *flags, int *errcode, PyArena *arena)
nodePyParser_SimpleParseFileFlags (FILE *fp, const char *filename, int start, int flags)
nodePyParser_SimpleParseStringFlags (const char *str, int start, int flags)
nodePyParser_SimpleParseStringFlagsFilename (const char *str, const char *filename, int start, int flags)
nodePyParser_SimpleParseStringFilename (const char *str, const char *filename, int start)
void PyParser_SetError (perrdetail *err)
void Py_FatalError (const char *msg)
void _Py_PyAtExit (void(*func)(void))
int Py_AtExit (void(*func)(void))
void Py_Exit (int sts)
void _Py_RestoreSignals (void)
int Py_FdIsInteractive (FILE *fp, const char *filename)
PyOS_sighandler_t PyOS_getsig (int sig)
PyOS_sighandler_t PyOS_setsig (int sig, PyOS_sighandler_t handler)
 PyAPI_FUNC (node *)
 PyAPI_FUNC (int)
 PyAPI_FUNC (PyObject *)

Variables

grammar _PyParser_Grammar
int Py_DebugFlag
int Py_VerboseFlag
int Py_QuietFlag
int Py_InteractiveFlag
int Py_InspectFlag
int Py_NoSiteFlag
int Py_BytesWarningFlag
int Py_DontWriteBytecodeFlag
int Py_UseClassExceptionsFlag = 1
int Py_FrozenFlag
int Py_IgnoreEnvironmentFlag
int Py_NoUserSiteDirectory = 0
int Py_UnbufferedStdioFlag = 0
PyThreadState_Py_Finalizing = NULL
static int initialized = 0
static wchar_t * progname = "python"
static wchar_t * default_home = NULL
static wchar_t env_home [PATH_MAX+1]
static const char * cause_message = "of the following exception:\n\n"
static const char * context_message = "another exception occurred:\n\n"
static void(* pyexitfunc )(void) = NULL
static void(* exitfuncs [NEXITFUNCS])(void)
static int nexitfuncs = 0

Define Documentation

#define NEXITFUNCS   32

Definition at line 2196 of file pythonrun.c.

#define PRINT_TOTAL_REFS ( )

Definition at line 39 of file pythonrun.c.


Function Documentation

void _Py_PyAtExit ( void(*)(void func)

Definition at line 2153 of file pythonrun.c.

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Definition at line 2249 of file pythonrun.c.

{
#ifdef SIGPIPE
    PyOS_setsig(SIGPIPE, SIG_DFL);
#endif
#ifdef SIGXFZ
    PyOS_setsig(SIGXFZ, SIG_DFL);
#endif
#ifdef SIGXFSZ
    PyOS_setsig(SIGXFSZ, SIG_DFL);
#endif
}

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Definition at line 4837 of file longobject.c.

{
#if NSMALLNEGINTS + NSMALLPOSINTS > 0
    int ival, size;
    PyLongObject *v = small_ints;

    for (ival = -NSMALLNEGINTS; ival <  NSMALLPOSINTS; ival++, v++) {
        size = (ival < 0) ? -1 : ((ival == 0) ? 0 : 1);
        if (Py_TYPE(v) == &PyLong_Type) {
            /* The element is already initialized, most likely
             * the Python interpreter was initialized before.
             */
            Py_ssize_t refcnt;
            PyObject* op = (PyObject*)v;

            refcnt = Py_REFCNT(op) < 0 ? 0 : Py_REFCNT(op);
            _Py_NewReference(op);
            /* _Py_NewReference sets the ref count to 1 but
             * the ref count might be larger. Set the refcnt
             * to the original refcnt + 1 */
            Py_REFCNT(op) = refcnt + 1;
            assert(Py_SIZE(op) == size);
            assert(v->ob_digit[0] == abs(ival));
        }
        else {
            PyObject_INIT(v, &PyLong_Type);
        }
        Py_SIZE(v) = size;
        v->ob_digit[0] = abs(ival);
    }
#endif
    /* initialize int_info */
    if (Int_InfoType.tp_name == 0)
        PyStructSequence_InitType(&Int_InfoType, &int_info_desc);

    return 1;
}

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Definition at line 10050 of file unicodeobject.c.

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Definition at line 9991 of file unicodeobject.c.

{
    int i;

    /* XXX - move this array to unicodectype.c ? */
    Py_UNICODE linebreak[] = {
        0x000A, /* LINE FEED */
        0x000D, /* CARRIAGE RETURN */
        0x001C, /* FILE SEPARATOR */
        0x001D, /* GROUP SEPARATOR */
        0x001E, /* RECORD SEPARATOR */
        0x0085, /* NEXT LINE */
        0x2028, /* LINE SEPARATOR */
        0x2029, /* PARAGRAPH SEPARATOR */
    };

    /* Init the implementation */
    free_list = NULL;
    numfree = 0;
    unicode_empty = _PyUnicode_New(0);
    if (!unicode_empty)
        return;

    for (i = 0; i < 256; i++)
        unicode_latin1[i] = NULL;
    if (PyType_Ready(&PyUnicode_Type) < 0)
        Py_FatalError("Can't initialize 'unicode'");

    /* initialize the linebreak bloom filter */
    bloom_linebreak = make_bloom_mask(
        linebreak, sizeof(linebreak) / sizeof(linebreak[0])
        );

    PyType_Ready(&EncodingMapType);
}

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static int add_flag ( int  flag,
const char *  envs 
) [static]

Definition at line 126 of file pythonrun.c.

{
    int env = atoi(envs);
    if (flag < env)
        flag = env;
    if (flag < 1)
        flag = 1;
    return flag;
}

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static void call_ll_exitfuncs ( void  ) [static]

Definition at line 2209 of file pythonrun.c.

{
    while (nexitfuncs > 0)
        (*exitfuncs[--nexitfuncs])();

    fflush(stdout);
    fflush(stderr);
}

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static void call_py_exitfuncs ( void  ) [static]

Definition at line 2159 of file pythonrun.c.

{
    if (pyexitfunc == NULL)
        return;

    (*pyexitfunc)();
    PyErr_Clear();
}

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static PyObject* create_stdio ( PyObject io,
int  fd,
int  write_mode,
char *  name,
char *  encoding,
char *  errors 
) [static]

Definition at line 789 of file pythonrun.c.

{
    PyObject *buf = NULL, *stream = NULL, *text = NULL, *raw = NULL, *res;
    const char* mode;
    const char* newline;
    PyObject *line_buffering;
    int buffering, isatty;

    /* 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_CallMethod(io, "open", "isiOOOi",
                              fd, mode, buffering,
                              Py_None, Py_None, Py_None, 0);
    if (buf == NULL)
        goto error;

    if (buffering) {
        raw = PyObject_GetAttrString(buf, "raw");
        if (raw == NULL)
            goto error;
    }
    else {
        raw = buf;
        Py_INCREF(raw);
    }

    text = PyUnicode_FromString(name);
    if (text == NULL || PyObject_SetAttrString(raw, "name", text) < 0)
        goto error;
    res = PyObject_CallMethod(raw, "isatty", "");
    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);

    newline = "\n";
#ifdef MS_WINDOWS
    if (!write_mode) {
        /* translate \r\n to \n for sys.stdin on Windows */
        newline = NULL;
    }
#endif

    stream = PyObject_CallMethod(io, "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_SetAttrString(stream, "mode", text) < 0)
        goto error;
    Py_CLEAR(text);
    return stream;

error:
    Py_XDECREF(buf);
    Py_XDECREF(stream);
    Py_XDECREF(text);
    Py_XDECREF(raw);
    return NULL;
}

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static void err_input ( perrdetail err) [static]

Definition at line 1993 of file pythonrun.c.

{
    PyObject *v, *w, *errtype, *errtext;
    PyObject *msg_obj = NULL;
    PyObject *filename;
    char *msg = NULL;

    errtype = PyExc_SyntaxError;
    switch (err->error) {
    case E_ERROR:
        return;
    case E_SYNTAX:
        errtype = PyExc_IndentationError;
        if (err->expected == INDENT)
            msg = "expected an indented block";
        else if (err->token == INDENT)
            msg = "unexpected indent";
        else if (err->token == DEDENT)
            msg = "unexpected unindent";
        else {
            errtype = PyExc_SyntaxError;
            msg = "invalid syntax";
        }
        break;
    case E_TOKEN:
        msg = "invalid token";
        break;
    case E_EOFS:
        msg = "EOF while scanning triple-quoted string literal";
        break;
    case E_EOLS:
        msg = "EOL while scanning string literal";
        break;
    case E_INTR:
        if (!PyErr_Occurred())
            PyErr_SetNone(PyExc_KeyboardInterrupt);
        goto cleanup;
    case E_NOMEM:
        PyErr_NoMemory();
        goto cleanup;
    case E_EOF:
        msg = "unexpected EOF while parsing";
        break;
    case E_TABSPACE:
        errtype = PyExc_TabError;
        msg = "inconsistent use of tabs and spaces in indentation";
        break;
    case E_OVERFLOW:
        msg = "expression too long";
        break;
    case E_DEDENT:
        errtype = PyExc_IndentationError;
        msg = "unindent does not match any outer indentation level";
        break;
    case E_TOODEEP:
        errtype = PyExc_IndentationError;
        msg = "too many levels of indentation";
        break;
    case E_DECODE: {
        PyObject *type, *value, *tb;
        PyErr_Fetch(&type, &value, &tb);
        msg = "unknown decode error";
        if (value != NULL)
            msg_obj = PyObject_Str(value);
        Py_XDECREF(type);
        Py_XDECREF(value);
        Py_XDECREF(tb);
        break;
    }
    case E_LINECONT:
        msg = "unexpected character after line continuation character";
        break;

    case E_IDENTIFIER:
        msg = "invalid character in identifier";
        break;
    default:
        fprintf(stderr, "error=%d\n", err->error);
        msg = "unknown parsing error";
        break;
    }
    /* err->text may not be UTF-8 in case of decoding errors.
       Explicitly convert to an object. */
    if (!err->text) {
        errtext = Py_None;
        Py_INCREF(Py_None);
    } else {
        errtext = PyUnicode_DecodeUTF8(err->text, strlen(err->text),
                                       "replace");
    }
    if (err->filename != NULL)
        filename = PyUnicode_DecodeFSDefault(err->filename);
    else {
        Py_INCREF(Py_None);
        filename = Py_None;
    }
    if (filename != NULL)
        v = Py_BuildValue("(NiiN)", filename,
                          err->lineno, err->offset, errtext);
    else
        v = NULL;
    if (v != NULL) {
        if (msg_obj)
            w = Py_BuildValue("(OO)", msg_obj, v);
        else
            w = Py_BuildValue("(sO)", msg, v);
    } else
        w = NULL;
    Py_XDECREF(v);
    PyErr_SetObject(errtype, w);
    Py_XDECREF(w);
cleanup:
    Py_XDECREF(msg_obj);
    if (err->text != NULL) {
        PyObject_FREE(err->text);
        err->text = NULL;
    }
}

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static void flush_io ( void  ) [static]

Definition at line 1746 of file pythonrun.c.

{
    PyObject *f, *r;
    PyObject *type, *value, *traceback;

    /* Save the current exception */
    PyErr_Fetch(&type, &value, &traceback);

    f = PySys_GetObject("stderr");
    if (f != NULL) {
        r = PyObject_CallMethod(f, "flush", "");
        if (r)
            Py_DECREF(r);
        else
            PyErr_Clear();
    }
    f = PySys_GetObject("stdout");
    if (f != NULL) {
        r = PyObject_CallMethod(f, "flush", "");
        if (r)
            Py_DECREF(r);
        else
            PyErr_Clear();
    }

    PyErr_Restore(type, value, traceback);
}

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static void flush_std_files ( void  ) [static]

Definition at line 336 of file pythonrun.c.

{
    PyObject *fout = PySys_GetObject("stdout");
    PyObject *ferr = PySys_GetObject("stderr");
    PyObject *tmp;

    if (fout != NULL && fout != Py_None) {
        tmp = PyObject_CallMethod(fout, "flush", "");
        if (tmp == NULL)
            PyErr_WriteUnraisable(fout);
        else
            Py_DECREF(tmp);
    }

    if (ferr != NULL && ferr != Py_None) {
        tmp = PyObject_CallMethod(ferr, "flush", "");
        if (tmp == NULL)
            PyErr_Clear();
        else
            Py_DECREF(tmp);
    }
}

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static char* get_codec_name ( const char *  encoding) [static]

Definition at line 137 of file pythonrun.c.

{
    char *name_utf8, *name_str;
    PyObject *codec, *name = NULL;

    codec = _PyCodec_Lookup(encoding);
    if (!codec)
        goto error;

    name = PyObject_GetAttrString(codec, "name");
    Py_CLEAR(codec);
    if (!name)
        goto error;

    name_utf8 = _PyUnicode_AsString(name);
    if (name_utf8 == NULL)
        goto error;
    name_str = strdup(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;
}

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static void handle_system_exit ( void  ) [static]

Definition at line 1402 of file pythonrun.c.

{
    PyObject *exception, *value, *tb;
    int exitcode = 0;

    if (Py_InspectFlag)
        /* Don't exit if -i flag was given. This flag is set to 0
         * when entering interactive mode for inspecting. */
        return;

    PyErr_Fetch(&exception, &value, &tb);
    fflush(stdout);
    if (value == NULL || value == Py_None)
        goto done;
    if (PyExceptionInstance_Check(value)) {
        /* The error code should be in the `code' attribute. */
        PyObject *code = PyObject_GetAttrString(value, "code");
        if (code) {
            Py_DECREF(value);
            value = code;
            if (value == Py_None)
                goto done;
        }
        /* If we failed to dig out the 'code' attribute,
           just let the else clause below print the error. */
    }
    if (PyLong_Check(value))
        exitcode = (int)PyLong_AsLong(value);
    else {
        PyObject *sys_stderr = PySys_GetObject("stderr");
        if (sys_stderr != NULL && sys_stderr != Py_None) {
            PyFile_WriteObject(value, sys_stderr, Py_PRINT_RAW);
        } else {
            PyObject_Print(value, stderr, Py_PRINT_RAW);
            fflush(stderr);
        }
        PySys_WriteStderr("\n");
        exitcode = 1;
    }
 done:
    /* Restore and clear the exception info, in order to properly decref
     * the exception, value, and traceback.      If we just exit instead,
     * these leak, which confuses PYTHONDUMPREFS output, and may prevent
     * some finalizers from running.
     */
    PyErr_Restore(exception, value, tb);
    PyErr_Clear();
    Py_Exit(exitcode);
    /* NOTREACHED */
}

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static int initfsencoding ( PyInterpreterState interp) [static]

Definition at line 736 of file pythonrun.c.

{
    PyObject *codec;
#if defined(HAVE_LANGINFO_H) && defined(CODESET)
    char *codeset = NULL;

    if (Py_FileSystemDefaultEncoding == NULL) {
        /* On Unix, set the file system encoding according to the
           user's preference, if the CODESET names a well-known
           Python codec, and Py_FileSystemDefaultEncoding isn't
           initialized by other means. */
        codeset = get_codeset();
        if (codeset == NULL)
            Py_FatalError("Py_Initialize: Unable to get the locale encoding");

        Py_FileSystemDefaultEncoding = codeset;
        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;
}

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static void initmain ( void  ) [static]

Definition at line 719 of file pythonrun.c.

{
    PyObject *m, *d;
    m = PyImport_AddModule("__main__");
    if (m == NULL)
        Py_FatalError("can't create __main__ module");
    d = PyModule_GetDict(m);
    if (PyDict_GetItemString(d, "__builtins__") == NULL) {
        PyObject *bimod = PyImport_ImportModule("builtins");
        if (bimod == NULL ||
            PyDict_SetItemString(d, "__builtins__", bimod) != 0)
            Py_FatalError("can't add __builtins__ to __main__");
        Py_DECREF(bimod);
    }
}

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static void initsigs ( void  ) [static]

Definition at line 2227 of file pythonrun.c.

{
#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() */
}

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static void initsite ( void  ) [static]

Definition at line 774 of file pythonrun.c.

{
    PyObject *m;
    m = PyImport_ImportModule("site");
    if (m == NULL) {
        PyErr_Print();
        Py_Finalize();
        exit(1);
    }
    else {
        Py_DECREF(m);
    }
}

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static int initstdio ( void  ) [static]

Definition at line 881 of file pythonrun.c.

{
    PyObject *iomod = NULL, *wrapper;
    PyObject *bimod = NULL;
    PyObject *m;
    PyObject *std = NULL;
    int status = 0, fd;
    PyObject * encoding_attr;
    char *encoding = NULL, *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_GETENV("PYTHONIOENCODING");
    errors = NULL;
    if (encoding) {
        encoding = strdup(encoding);
        errors = strchr(encoding, ':');
        if (errors) {
            *errors = '\0';
            errors++;
        }
    }

    /* 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.
     */
    if (fd < 0) {
#ifdef MS_WINDOWS
        std = Py_None;
        Py_INCREF(std);
#else
        goto error;
#endif
    }
    else {
        std = create_stdio(iomod, fd, 0, "<stdin>", encoding, errors);
        if (std == NULL)
            goto error;
    } /* if (fd < 0) */
    PySys_SetObject("__stdin__", std);
    PySys_SetObject("stdin", std);
    Py_DECREF(std);

    /* Set sys.stdout */
    fd = fileno(stdout);
    if (fd < 0) {
#ifdef MS_WINDOWS
        std = Py_None;
        Py_INCREF(std);
#else
        goto error;
#endif
    }
    else {
        std = create_stdio(iomod, fd, 1, "<stdout>", encoding, errors);
        if (std == NULL)
            goto error;
    } /* if (fd < 0) */
    PySys_SetObject("__stdout__", std);
    PySys_SetObject("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);
    if (fd < 0) {
#ifdef MS_WINDOWS
        std = Py_None;
        Py_INCREF(std);
#else
        goto error;
#endif
    }
    else {
        std = create_stdio(iomod, fd, 1, "<stderr>", encoding, "backslashreplace");
        if (std == NULL)
            goto error;
    } /* if (fd < 0) */

    /* 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 * encoding;
        encoding = _PyUnicode_AsString(encoding_attr);
        if (encoding != NULL) {
            _PyCodec_Lookup(encoding);
        }
        Py_DECREF(encoding_attr);
    }
    PyErr_Clear();  /* Not a fatal error if codec isn't available */

    PySys_SetObject("__stderr__", std);
    PySys_SetObject("stderr", std);
    Py_DECREF(std);
#endif

    if (0) {
  error:
        status = -1;
    }

    if (encoding)
        free(encoding);
    Py_XDECREF(bimod);
    Py_XDECREF(iomod);
    return status;
}

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static int maybe_pyc_file ( FILE *  fp,
const char *  filename,
const char *  ext,
int  closeit 
) [static]

Definition at line 1186 of file pythonrun.c.

{
    if (strcmp(ext, ".pyc") == 0 || strcmp(ext, ".pyo") == 0)
        return 1;

    /* Only look into the file if we are allowed to close it, since
       it then should also be seekable. */
    if (closeit) {
        /* Read only two bytes of the magic. If the file was opened in
           text mode, the bytes 3 and 4 of the magic (\r\n) might not
           be read as they are on disk. */
        unsigned int halfmagic = PyImport_GetMagicNumber() & 0xFFFF;
        unsigned char buf[2];
        /* Mess:  In case of -x, the stream is NOT at its start now,
           and ungetc() was used to push back the first newline,
           which makes the current stream position formally undefined,
           and a x-platform nightmare.
           Unfortunately, we have no direct way to know whether -x
           was specified.  So we use a terrible hack:  if the current
           stream position is not 0, we assume -x was specified, and
           give up.  Bug 132850 on SourceForge spells out the
           hopelessness of trying anything else (fseek and ftell
           don't work predictably x-platform for text-mode files).
        */
        int ispyc = 0;
        if (ftell(fp) == 0) {
            if (fread(buf, 1, 2, fp) == 2 &&
                ((unsigned int)buf[1]<<8 | buf[0]) == halfmagic)
                ispyc = 1;
            rewind(fp);
        }
        return ispyc;
    }
    return 0;
}

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static int parse_syntax_error ( PyObject err,
PyObject **  message,
const char **  filename,
int lineno,
int offset,
const char **  text 
) [static]

Definition at line 1300 of file pythonrun.c.

{
    long hold;
    PyObject *v;

    /* old style errors */
    if (PyTuple_Check(err))
        return PyArg_ParseTuple(err, "O(ziiz)", message, filename,
                                lineno, offset, text);

    /* new style errors.  `err' is an instance */

    if (! (v = PyObject_GetAttrString(err, "msg")))
        goto finally;
    *message = v;

    if (!(v = PyObject_GetAttrString(err, "filename")))
        goto finally;
    if (v == Py_None)
        *filename = NULL;
    else if (! (*filename = _PyUnicode_AsString(v)))
        goto finally;

    Py_DECREF(v);
    if (!(v = PyObject_GetAttrString(err, "lineno")))
        goto finally;
    hold = PyLong_AsLong(v);
    Py_DECREF(v);
    v = NULL;
    if (hold < 0 && PyErr_Occurred())
        goto finally;
    *lineno = (int)hold;

    if (!(v = PyObject_GetAttrString(err, "offset")))
        goto finally;
    if (v == Py_None) {
        *offset = -1;
        Py_DECREF(v);
        v = NULL;
    } else {
        hold = PyLong_AsLong(v);
        Py_DECREF(v);
        v = NULL;
        if (hold < 0 && PyErr_Occurred())
            goto finally;
        *offset = (int)hold;
    }

    if (!(v = PyObject_GetAttrString(err, "text")))
        goto finally;
    if (v == Py_None)
        *text = NULL;
    else if (!PyUnicode_Check(v) ||
             !(*text = _PyUnicode_AsString(v)))
        goto finally;
    Py_DECREF(v);
    return 1;

finally:
    Py_XDECREF(v);
    return 0;
}

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static int PARSER_FLAGS ( PyCompilerFlags flags) [static]

Definition at line 1073 of file pythonrun.c.

{
    int parser_flags = 0;
    if (!flags)
        return 0;
    if (flags->cf_flags & PyCF_DONT_IMPLY_DEDENT)
        parser_flags |= PyPARSE_DONT_IMPLY_DEDENT;
    if (flags->cf_flags & PyCF_IGNORE_COOKIE)
        parser_flags |= PyPARSE_IGNORE_COOKIE;
    if (flags->cf_flags & CO_FUTURE_BARRY_AS_BDFL)
        parser_flags |= PyPARSE_BARRY_AS_BDFL;
    return parser_flags;
}

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static void print_error_text ( PyObject f,
int  offset,
const char *  text 
) [static]

Definition at line 1371 of file pythonrun.c.

{
    char *nl;
    if (offset >= 0) {
        if (offset > 0 && offset == strlen(text) && text[offset - 1] == '\n')
            offset--;
        for (;;) {
            nl = strchr(text, '\n');
            if (nl == NULL || nl-text >= offset)
                break;
            offset -= (int)(nl+1-text);
            text = nl+1;
        }
        while (*text == ' ' || *text == '\t') {
            text++;
            offset--;
        }
    }
    PyFile_WriteString("    ", f);
    PyFile_WriteString(text, f);
    if (*text == '\0' || text[strlen(text)-1] != '\n')
        PyFile_WriteString("\n", f);
    if (offset == -1)
        return;
    PyFile_WriteString("    ", f);
    while (--offset > 0)
        PyFile_WriteString(" ", f);
    PyFile_WriteString("^\n", f);
}

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static void print_exception ( PyObject f,
PyObject value 
) [static]

Definition at line 1521 of file pythonrun.c.

{
    int err = 0;
    PyObject *type, *tb;

    if (!PyExceptionInstance_Check(value)) {
        PyFile_WriteString("TypeError: print_exception(): Exception expected for value, ", f);
        PyFile_WriteString(Py_TYPE(value)->tp_name, f);
        PyFile_WriteString(" found\n", f);
        return;
    }

    Py_INCREF(value);
    fflush(stdout);
    type = (PyObject *) Py_TYPE(value);
    tb = PyException_GetTraceback(value);
    if (tb && tb != Py_None)
        err = PyTraceBack_Print(tb, f);
    if (err == 0 &&
        PyObject_HasAttrString(value, "print_file_and_line"))
    {
        PyObject *message;
        const char *filename, *text;
        int lineno, offset;
        if (!parse_syntax_error(value, &message, &filename,
                                &lineno, &offset, &text))
            PyErr_Clear();
        else {
            char buf[10];
            PyFile_WriteString("  File \"", f);
            if (filename == NULL)
                PyFile_WriteString("<string>", f);
            else
                PyFile_WriteString(filename, f);
            PyFile_WriteString("\", line ", f);
            PyOS_snprintf(buf, sizeof(buf), "%d", lineno);
            PyFile_WriteString(buf, f);
            PyFile_WriteString("\n", f);
            if (text != NULL)
                print_error_text(f, offset, text);
            Py_DECREF(value);
            value = message;
            /* Can't be bothered to check all those
               PyFile_WriteString() calls */
            if (PyErr_Occurred())
                err = -1;
        }
    }
    if (err) {
        /* Don't do anything else */
    }
    else {
        PyObject* moduleName;
        char* className;
        assert(PyExceptionClass_Check(type));
        className = PyExceptionClass_Name(type);
        if (className != NULL) {
            char *dot = strrchr(className, '.');
            if (dot != NULL)
                className = dot+1;
        }

        moduleName = PyObject_GetAttrString(type, "__module__");
        if (moduleName == NULL || !PyUnicode_Check(moduleName))
        {
            Py_DECREF(moduleName);
            err = PyFile_WriteString("<unknown>", f);
        }
        else {
            char* modstr = _PyUnicode_AsString(moduleName);
            if (modstr && strcmp(modstr, "builtins"))
            {
                err = PyFile_WriteString(modstr, f);
                err += PyFile_WriteString(".", f);
            }
            Py_DECREF(moduleName);
        }
        if (err == 0) {
            if (className == NULL)
                      err = PyFile_WriteString("<unknown>", f);
            else
                      err = PyFile_WriteString(className, f);
        }
    }
    if (err == 0 && (value != Py_None)) {
        PyObject *s = PyObject_Str(value);
        /* only print colon if the str() of the
           object is not the empty string
        */
        if (s == NULL)
            err = -1;
        else if (!PyUnicode_Check(s) ||
            PyUnicode_GetSize(s) != 0)
            err = PyFile_WriteString(": ", f);
        if (err == 0)
          err = PyFile_WriteObject(s, f, Py_PRINT_RAW);
        Py_XDECREF(s);
    }
    /* try to write a newline in any case */
    err += PyFile_WriteString("\n", f);
    Py_XDECREF(tb);
    Py_DECREF(value);
    /* If an error happened here, don't show it.
       XXX This is wrong, but too many callers rely on this behavior. */
    if (err != 0)
        PyErr_Clear();
}

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static void print_exception_recursive ( PyObject f,
PyObject value,
PyObject seen 
) [static]

Definition at line 1638 of file pythonrun.c.

{
    int err = 0, res;
    PyObject *cause, *context;

    if (seen != NULL) {
        /* Exception chaining */
        if (PySet_Add(seen, value) == -1)
            PyErr_Clear();
        else if (PyExceptionInstance_Check(value)) {
            cause = PyException_GetCause(value);
            context = PyException_GetContext(value);
            if (cause) {
                res = PySet_Contains(seen, cause);
                if (res == -1)
                    PyErr_Clear();
                if (res == 0) {
                    print_exception_recursive(
                        f, cause, seen);
                    err |= PyFile_WriteString(
                        cause_message, f);
                }
            }
            else if (context) {
                res = PySet_Contains(seen, context);
                if (res == -1)
                    PyErr_Clear();
                if (res == 0) {
                    print_exception_recursive(
                        f, context, seen);
                    err |= PyFile_WriteString(
                        context_message, f);
                }
            }
            Py_XDECREF(context);
            Py_XDECREF(cause);
        }
    }
    print_exception(f, value);
    if (err != 0)
        PyErr_Clear();
}

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int Py_AtExit ( void(*)(void func)

Definition at line 2200 of file pythonrun.c.

{
    if (nexitfuncs >= NEXITFUNCS)
        return -1;
    exitfuncs[nexitfuncs++] = func;
    return 0;
}

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PyObject* Py_CompileStringExFlags ( const char *  str,
const char *  filename,
int  start,
PyCompilerFlags flags,
int  optimize 
)

Definition at line 1821 of file pythonrun.c.

{
    PyCodeObject *co;
    mod_ty mod;
    PyArena *arena = PyArena_New();
    if (arena == NULL)
        return NULL;

    mod = PyParser_ASTFromString(str, filename, start, flags, arena);
    if (mod == NULL) {
        PyArena_Free(arena);
        return NULL;
    }
    if (flags && (flags->cf_flags & PyCF_ONLY_AST)) {
        PyObject *result = PyAST_mod2obj(mod);
        PyArena_Free(arena);
        return result;
    }
    co = PyAST_CompileEx(mod, filename, flags, optimize, arena);
    PyArena_Free(arena);
    return (PyObject *)co;
}

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Definition at line 659 of file pythonrun.c.

{
    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");
    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);
}

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void Py_Exit ( int  sts)

Definition at line 2219 of file pythonrun.c.

{
    Py_Finalize();

    exit(sts);
}

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void Py_FatalError ( const char *  msg)

Definition at line 2115 of file pythonrun.c.

{
    fprintf(stderr, "Fatal Python error: %s\n", msg);
    fflush(stderr); /* it helps in Windows debug build */
    if (PyErr_Occurred()) {
        PyErr_PrintEx(0);
    }
#ifdef MS_WINDOWS
    {
        size_t len = strlen(msg);
        WCHAR* buffer;
        size_t i;

        /* 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");
    }
#ifdef _DEBUG
    DebugBreak();
#endif
#endif /* MS_WINDOWS */
    abort();
}

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int Py_FdIsInteractive ( FILE *  fp,
const char *  filename 
)

Definition at line 2270 of file pythonrun.c.

{
    if (isatty((int)fileno(fp)))
        return 1;
    if (!Py_InteractiveFlag)
        return 0;
    return (filename == NULL) ||
           (strcmp(filename, "<stdin>") == 0) ||
           (strcmp(filename, "???") == 0);
}

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Definition at line 374 of file pythonrun.c.

{
    PyInterpreterState *interp;
    PyThreadState *tstate;

    if (!initialized)
        return;

    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 stdout+stderr */
    flush_std_files();

    /* Disable signal handling */
    PyOS_FiniInterrupts();

    /* Clear type lookup cache */
    PyType_ClearCache();

    /* 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_Collect();
#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_Collect() > 0)
        /* nothing */;
#endif
    /* We run this while most interpreter state is still alive, so that
       debug information can be printed out */
    _PyGC_Fini();

    /* Destroy all modules */
    PyImport_Cleanup();

    /* Flush stdout+stderr (again, in case more was printed) */
    flush_std_files();

    /* Collect final garbage.  This disposes of cycles created by
     * new-style 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_Collect();
#endif

    /* Destroy the database used by _PyImport_{Fixup,Find}Extension */
    _PyImport_Fini();

    /* Debugging stuff */
#ifdef COUNT_ALLOCS
    dump_counts(stdout);
#endif

    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 */
    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();

    /* Cleanup auto-thread-state */
#ifdef WITH_THREAD
    _PyGILState_Fini();
#endif /* WITH_THREAD */

    /* Delete current thread */
    PyThreadState_Swap(NULL);
    PyInterpreterState_Delete(interp);

    /* Sundry finalizers */
    PyMethod_Fini();
    PyFrame_Fini();
    PyCFunction_Fini();
    PyTuple_Fini();
    PyList_Fini();
    PySet_Fini();
    PyBytes_Fini();
    PyByteArray_Fini();
    PyLong_Fini();
    PyFloat_Fini();
    PyDict_Fini();

    /* Cleanup Unicode implementation */
    _PyUnicode_Fini();

    /* reset file system default encoding */
    if (!Py_HasFileSystemDefaultEncoding && Py_FileSystemDefaultEncoding) {
        free((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);

#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 PYMALLOC_DEBUG
    if (Py_GETENV("PYTHONMALLOCSTATS"))
        _PyObject_DebugMallocStats();
#endif

    call_ll_exitfuncs();
}

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wchar_t* Py_GetPath ( void  )

Definition at line 748 of file getpath.c.

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wchar_t* Py_GetProgramName ( void  )

Definition at line 686 of file pythonrun.c.

{
    return progname;
}

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wchar_t* Py_GetPythonHome ( void  )

Definition at line 701 of file pythonrun.c.

{
    wchar_t *home = default_home;
    if (home == NULL && !Py_IgnoreEnvironmentFlag) {
        char* chome = Py_GETENV("PYTHONHOME");
        if (chome) {
            size_t r = mbstowcs(env_home, chome, PATH_MAX+1);
            if (r != (size_t)-1 && r <= PATH_MAX)
                home = env_home;
        }

    }
    return home;
}

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Definition at line 323 of file pythonrun.c.

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void Py_InitializeEx ( int  install_sigs)

Definition at line 182 of file pythonrun.c.

{
    PyInterpreterState *interp;
    PyThreadState *tstate;
    PyObject *bimod, *sysmod, *pstderr;
    char *p;
    extern void _Py_ReadyTypes(void);

    if (initialized)
        return;
    initialized = 1;
    _Py_Finalizing = NULL;

#if defined(HAVE_LANGINFO_H) && defined(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);

    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_Finalize 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_Finalize 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");

    _PyFloat_Init();

    interp->modules = PyDict_New();
    if (interp->modules == NULL)
        Py_FatalError("Py_Initialize: can't make modules dictionary");
    interp->modules_reloading = PyDict_New();
    if (interp->modules_reloading == NULL)
        Py_FatalError("Py_Initialize: can't make modules_reloading dictionary");

    /* Init Unicode implementation; relies on the codec registry */
    _PyUnicode_Init();

    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();

    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_SetObject("stderr", pstderr);
    PySys_SetObject("__stderr__", pstderr);
    Py_DECREF(pstderr);

    _PyImport_Init();

    _PyImportHooks_Init();

    /* Initialize _warnings. */
    _PyWarnings_Init();

    _PyTime_Init();

    if (initfsencoding(interp) < 0)
        Py_FatalError("Py_Initialize: unable to load the file system codec");

    if (install_sigs)
        initsigs(); /* Signal handling stuff, including initintr() */

    initmain(); /* 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 */
}

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Definition at line 108 of file pythonrun.c.

{
    return initialized;
}

Definition at line 562 of file pythonrun.c.

{
    PyInterpreterState *interp;
    PyThreadState *tstate, *save_tstate;
    PyObject *bimod, *sysmod;

    if (!initialized)
        Py_FatalError("Py_NewInterpreter: call Py_Initialize first");

    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();
    interp->modules_reloading = 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();

    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_SetObject("stderr", pstderr);
        PySys_SetObject("__stderr__", pstderr);
        Py_DECREF(pstderr);

        _PyImportHooks_Init();

        if (initfsencoding(interp) < 0)
            goto handle_error;

        if (initstdio() < 0)
            Py_FatalError(
            "Py_Initialize: can't initialize sys standard streams");
        initmain();
        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;
}

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void Py_SetProgramName ( wchar_t *  pn)

Definition at line 679 of file pythonrun.c.

{
    if (pn && *pn)
        progname = pn;
}

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void Py_SetPythonHome ( wchar_t *  home)

Definition at line 695 of file pythonrun.c.

{
    default_home = home;
}
struct symtable* Py_SymtableString ( const char *  str,
const char *  filename,
int  start 
) [read]

Definition at line 1854 of file pythonrun.c.

{
    struct symtable *st;
    mod_ty mod;
    PyCompilerFlags flags;
    PyArena *arena = PyArena_New();
    if (arena == NULL)
        return NULL;

    flags.cf_flags = 0;
    mod = PyParser_ASTFromString(str, filename, start, &flags, arena);
    if (mod == NULL) {
        PyArena_Free(arena);
        return NULL;
    }
    st = PySymtable_Build(mod, filename, 0);
    PyArena_Free(arena);
    return st;
}

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PyAPI_FUNC ( node )

Definition at line 2389 of file pythonrun.c.

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PyAPI_FUNC ( int  ) [read]

Definition at line 2403 of file pythonrun.c.

{
    return PyRun_AnyFileExFlags(fp, name, 0, NULL);
}

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PyAPI_FUNC ( PyObject ) [read]

Definition at line 2424 of file pythonrun.c.

{
    return PyRun_FileExFlags(fp, p, s, g, l, 0, NULL);
}

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PyObject* PyCompileString ( const char *  str,
const char *  filename,
int  start 
)

Definition at line 1848 of file pythonrun.c.

void PyErr_Display ( PyObject exception,
PyObject value,
PyObject tb 
)

Definition at line 1682 of file pythonrun.c.

{
    PyObject *seen;
    PyObject *f = PySys_GetObject("stderr");
    if (f == Py_None) {
        /* pass */
    }
    else if (f == NULL) {
        _PyObject_Dump(value);
        fprintf(stderr, "lost sys.stderr\n");
    }
    else {
        /* We choose to ignore seen being possibly NULL, and report
           at least the main exception (it could be a MemoryError).
        */
        seen = PySet_New(NULL);
        if (seen == NULL)
            PyErr_Clear();
        print_exception_recursive(f, value, seen);
        Py_XDECREF(seen);
    }
}

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Definition at line 1365 of file pythonrun.c.

{
    PyErr_PrintEx(1);
}

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void PyErr_PrintEx ( int  set_sys_last_vars)

Definition at line 1454 of file pythonrun.c.

{
    PyObject *exception, *v, *tb, *hook;

    if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
        handle_system_exit();
    }
    PyErr_Fetch(&exception, &v, &tb);
    if (exception == NULL)
        return;
    PyErr_NormalizeException(&exception, &v, &tb);
    if (tb == NULL) {
        tb = Py_None;
        Py_INCREF(tb);
    }
    PyException_SetTraceback(v, tb);
    if (exception == NULL)
        return;
    /* Now we know v != NULL too */
    if (set_sys_last_vars) {
        PySys_SetObject("last_type", exception);
        PySys_SetObject("last_value", v);
        PySys_SetObject("last_traceback", tb);
    }
    hook = PySys_GetObject("excepthook");
    if (hook) {
        PyObject *args = PyTuple_Pack(3, exception, v, tb);
        PyObject *result = PyEval_CallObject(hook, args);
        if (result == NULL) {
            PyObject *exception2, *v2, *tb2;
            if (PyErr_ExceptionMatches(PyExc_SystemExit)) {
                handle_system_exit();
            }
            PyErr_Fetch(&exception2, &v2, &tb2);
            PyErr_NormalizeException(&exception2, &v2, &tb2);
            /* It should not be possible for exception2 or v2
               to be NULL. However PyErr_Display() can't
               tolerate NULLs, so just be safe. */
            if (exception2 == NULL) {
                exception2 = Py_None;
                Py_INCREF(exception2);
            }
            if (v2 == NULL) {
                v2 = Py_None;
                Py_INCREF(v2);
            }
            fflush(stdout);
            PySys_WriteStderr("Error in sys.excepthook:\n");
            PyErr_Display(exception2, v2, tb2);
            PySys_WriteStderr("\nOriginal exception was:\n");
            PyErr_Display(exception, v, tb);
            Py_DECREF(exception2);
            Py_DECREF(v2);
            Py_XDECREF(tb2);
        }
        Py_XDECREF(result);
        Py_XDECREF(args);
    } else {
        PySys_WriteStderr("sys.excepthook is missing\n");
        PyErr_Display(exception, v, tb);
    }
    Py_XDECREF(exception);
    Py_XDECREF(v);
    Py_XDECREF(tb);
}

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Definition at line 4876 of file longobject.c.

{
    /* Integers are currently statically allocated. Py_DECREF is not
       needed, but Python must forget about the reference or multiple
       reinitializations will fail. */
#if NSMALLNEGINTS + NSMALLPOSINTS > 0
    int i;
    PyLongObject *v = small_ints;
    for (i = 0; i < NSMALLNEGINTS + NSMALLPOSINTS; i++, v++) {
        _Py_DEC_REFTOTAL;
        _Py_ForgetReference((PyObject*)v);
    }
#endif
}

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Definition at line 98 of file pythonrun.c.

{
    return PyImport_ImportModule("warnings");
}

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Definition at line 2323 of file pythonrun.c.

{
#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
}

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Definition at line 2362 of file pythonrun.c.

{
#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
}

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mod_ty PyParser_ASTFromFile ( FILE *  fp,
const char *  filename,
const char *  enc,
int  start,
char *  ps1,
char *  ps2,
PyCompilerFlags flags,
int errcode,
PyArena *  arena 
)

Definition at line 1904 of file pythonrun.c.

{
    mod_ty mod;
    PyCompilerFlags localflags;
    perrdetail err;
    int iflags = PARSER_FLAGS(flags);

    node *n = PyParser_ParseFileFlagsEx(fp, filename, enc,
                                      &_PyParser_Grammar,
                            start, ps1, ps2, &err, &iflags);
    if (flags == NULL) {
        localflags.cf_flags = 0;
        flags = &localflags;
    }
    if (n) {
        flags->cf_flags |= iflags & PyCF_MASK;
        mod = PyAST_FromNode(n, flags, filename, arena);
        PyNode_Free(n);
        return mod;
    }
    else {
        err_input(&err);
        if (errcode)
            *errcode = err.error;
        return NULL;
    }
}

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mod_ty PyParser_ASTFromString ( const char *  s,
const char *  filename,
int  start,
PyCompilerFlags flags,
PyArena *  arena 
)

Definition at line 1876 of file pythonrun.c.

{
    mod_ty mod;
    PyCompilerFlags localflags;
    perrdetail err;
    int iflags = PARSER_FLAGS(flags);

    node *n = PyParser_ParseStringFlagsFilenameEx(s, filename,
                                    &_PyParser_Grammar, start, &err,
                                    &iflags);
    if (flags == NULL) {
        localflags.cf_flags = 0;
        flags = &localflags;
    }
    if (n) {
        flags->cf_flags |= iflags & PyCF_MASK;
        mod = PyAST_FromNode(n, flags, filename, arena);
        PyNode_Free(n);
        return mod;
    }
    else {
        err_input(&err);
        return NULL;
    }
}

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Definition at line 1985 of file pythonrun.c.

{
    err_input(err);
}

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node* PyParser_SimpleParseFileFlags ( FILE *  fp,
const char *  filename,
int  start,
int  flags 
)

Definition at line 1938 of file pythonrun.c.

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node* PyParser_SimpleParseStringFilename ( const char *  str,
const char *  filename,
int  start 
)

Definition at line 1976 of file pythonrun.c.

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node* PyParser_SimpleParseStringFlags ( const char *  str,
int  start,
int  flags 
)

Definition at line 1953 of file pythonrun.c.

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node* PyParser_SimpleParseStringFlagsFilename ( const char *  str,
const char *  filename,
int  start,
int  flags 
)

Definition at line 1964 of file pythonrun.c.

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int PyRun_AnyFileExFlags ( FILE *  fp,
const char *  filename,
int  closeit,
PyCompilerFlags flags 
)

Definition at line 1024 of file pythonrun.c.

{
    if (filename == NULL)
        filename = "???";
    if (Py_FdIsInteractive(fp, filename)) {
        int err = PyRun_InteractiveLoopFlags(fp, filename, flags);
        if (closeit)
            fclose(fp);
        return err;
    }
    else
        return PyRun_SimpleFileExFlags(fp, filename, closeit, flags);
}

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PyObject* PyRun_FileExFlags ( FILE *  fp,
const char *  filename,
int  start,
PyObject globals,
PyObject locals,
int  closeit,
PyCompilerFlags flags 
)

Definition at line 1723 of file pythonrun.c.

{
    PyObject *ret;
    mod_ty mod;
    PyArena *arena = PyArena_New();
    if (arena == NULL)
        return NULL;

    mod = PyParser_ASTFromFile(fp, filename, NULL, start, 0, 0,
                               flags, NULL, arena);
    if (closeit)
        fclose(fp);
    if (mod == NULL) {
        PyArena_Free(arena);
        return NULL;
    }
    ret = run_mod(mod, filename, globals, locals, flags, arena);
    PyArena_Free(arena);
    return ret;
}

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int PyRun_InteractiveLoopFlags ( FILE *  fp,
const char *  filename,
PyCompilerFlags flags 
)

Definition at line 1040 of file pythonrun.c.

{
    PyObject *v;
    int ret;
    PyCompilerFlags local_flags;

    if (flags == NULL) {
        flags = &local_flags;
        local_flags.cf_flags = 0;
    }
    v = PySys_GetObject("ps1");
    if (v == NULL) {
        PySys_SetObject("ps1", v = PyUnicode_FromString(">>> "));
        Py_XDECREF(v);
    }
    v = PySys_GetObject("ps2");
    if (v == NULL) {
        PySys_SetObject("ps2", v = PyUnicode_FromString("... "));
        Py_XDECREF(v);
    }
    for (;;) {
        ret = PyRun_InteractiveOneFlags(fp, filename, flags);
        PRINT_TOTAL_REFS();
        if (ret == E_EOF)
            return 0;
        /*
        if (ret == E_NOMEM)
            return -1;
        */
    }
}

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int PyRun_InteractiveOneFlags ( FILE *  fp,
const char *  filename,
PyCompilerFlags flags 
)

Definition at line 1097 of file pythonrun.c.

{
    PyObject *m, *d, *v, *w, *oenc = NULL;
    mod_ty mod;
    PyArena *arena;
    char *ps1 = "", *ps2 = "", *enc = NULL;
    int errcode = 0;

    if (fp == stdin) {
        /* Fetch encoding from sys.stdin */
        v = PySys_GetObject("stdin");
        if (v == NULL || v == Py_None)
            return -1;
        oenc = PyObject_GetAttrString(v, "encoding");
        if (!oenc)
            return -1;
        enc = _PyUnicode_AsString(oenc);
        if (enc == NULL)
            return -1;
    }
    v = PySys_GetObject("ps1");
    if (v != NULL) {
        v = PyObject_Str(v);
        if (v == NULL)
            PyErr_Clear();
        else if (PyUnicode_Check(v)) {
            ps1 = _PyUnicode_AsString(v);
            if (ps1 == NULL) {
                PyErr_Clear();
                ps1 = "";
            }
        }
    }
    w = PySys_GetObject("ps2");
    if (w != NULL) {
        w = PyObject_Str(w);
        if (w == NULL)
            PyErr_Clear();
        else if (PyUnicode_Check(w)) {
            ps2 = _PyUnicode_AsString(w);
            if (ps2 == NULL) {
                PyErr_Clear();
                ps2 = "";
            }
        }
    }
    arena = PyArena_New();
    if (arena == NULL) {
        Py_XDECREF(v);
        Py_XDECREF(w);
        Py_XDECREF(oenc);
        return -1;
    }
    mod = PyParser_ASTFromFile(fp, filename, enc,
                               Py_single_input, ps1, ps2,
                               flags, &errcode, arena);
    Py_XDECREF(v);
    Py_XDECREF(w);
    Py_XDECREF(oenc);
    if (mod == NULL) {
        PyArena_Free(arena);
        if (errcode == E_EOF) {
            PyErr_Clear();
            return E_EOF;
        }
        PyErr_Print();
        return -1;
    }
    m = PyImport_AddModule("__main__");
    if (m == NULL) {
        PyArena_Free(arena);
        return -1;
    }
    d = PyModule_GetDict(m);
    v = run_mod(mod, filename, d, d, flags, arena);
    PyArena_Free(arena);
    flush_io();
    if (v == NULL) {
        PyErr_Print();
        return -1;
    }
    Py_DECREF(v);
    return 0;
}

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int PyRun_SimpleFileExFlags ( FILE *  fp,
const char *  filename,
int  closeit,
PyCompilerFlags flags 
)

Definition at line 1223 of file pythonrun.c.

{
    PyObject *m, *d, *v;
    const char *ext;
    int set_file_name = 0, ret;
    size_t len;

    m = PyImport_AddModule("__main__");
    if (m == NULL)
        return -1;
    d = PyModule_GetDict(m);
    if (PyDict_GetItemString(d, "__file__") == NULL) {
        PyObject *f;
        f = PyUnicode_DecodeFSDefault(filename);
        if (f == NULL)
            return -1;
        if (PyDict_SetItemString(d, "__file__", f) < 0) {
            Py_DECREF(f);
            return -1;
        }
        if (PyDict_SetItemString(d, "__cached__", Py_None) < 0)
            return -1;
        set_file_name = 1;
        Py_DECREF(f);
    }
    len = strlen(filename);
    ext = filename + len - (len > 4 ? 4 : 0);
    if (maybe_pyc_file(fp, filename, ext, closeit)) {
        /* Try to run a pyc file. First, re-open in binary */
        if (closeit)
            fclose(fp);
        if ((fp = fopen(filename, "rb")) == NULL) {
            fprintf(stderr, "python: Can't reopen .pyc file\n");
            ret = -1;
            goto done;
        }
        /* Turn on optimization if a .pyo file is given */
        if (strcmp(ext, ".pyo") == 0)
            Py_OptimizeFlag = 1;
        v = run_pyc_file(fp, filename, d, d, flags);
    } else {
        v = PyRun_FileExFlags(fp, filename, Py_file_input, d, d,
                              closeit, flags);
    }
    flush_io();
    if (v == NULL) {
        PyErr_Print();
        ret = -1;
        goto done;
    }
    Py_DECREF(v);
    ret = 0;
  done:
    if (set_file_name && PyDict_DelItemString(d, "__file__"))
        PyErr_Clear();
    return ret;
}

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int PyRun_SimpleStringFlags ( const char *  command,
PyCompilerFlags flags 
)

Definition at line 1283 of file pythonrun.c.

{
    PyObject *m, *d, *v;
    m = PyImport_AddModule("__main__");
    if (m == NULL)
        return -1;
    d = PyModule_GetDict(m);
    v = PyRun_StringFlags(command, Py_file_input, d, d, flags);
    if (v == NULL) {
        PyErr_Print();
        return -1;
    }
    Py_DECREF(v);
    return 0;
}

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PyObject* PyRun_StringFlags ( const char *  str,
int  start,
PyObject globals,
PyObject locals,
PyCompilerFlags flags 
)

Definition at line 1706 of file pythonrun.c.

{
    PyObject *ret = NULL;
    mod_ty mod;
    PyArena *arena = PyArena_New();
    if (arena == NULL)
        return NULL;

    mod = PyParser_ASTFromString(str, "<string>", start, flags, arena);
    if (mod != NULL)
        ret = run_mod(mod, "<string>", globals, locals, flags, arena);
    PyArena_Free(arena);
    return ret;
}

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static PyObject * run_mod ( mod_ty  mod,
const char *  filename,
PyObject globals,
PyObject locals,
PyCompilerFlags flags,
PyArena *  arena 
) [static]

Definition at line 1775 of file pythonrun.c.

{
    PyCodeObject *co;
    PyObject *v;
    co = PyAST_Compile(mod, filename, flags, arena);
    if (co == NULL)
        return NULL;
    v = PyEval_EvalCode((PyObject*)co, globals, locals);
    Py_DECREF(co);
    return v;
}

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static PyObject * run_pyc_file ( FILE *  fp,
const char *  filename,
PyObject globals,
PyObject locals,
PyCompilerFlags flags 
) [static]

Definition at line 1789 of file pythonrun.c.

{
    PyCodeObject *co;
    PyObject *v;
    long magic;
    long PyImport_GetMagicNumber(void);

    magic = PyMarshal_ReadLongFromFile(fp);
    if (magic != PyImport_GetMagicNumber()) {
        PyErr_SetString(PyExc_RuntimeError,
                   "Bad magic number in .pyc file");
        return NULL;
    }
    (void) PyMarshal_ReadLongFromFile(fp);
    v = PyMarshal_ReadLastObjectFromFile(fp);
    fclose(fp);
    if (v == NULL || !PyCode_Check(v)) {
        Py_XDECREF(v);
        PyErr_SetString(PyExc_RuntimeError,
                   "Bad code object in .pyc file");
        return NULL;
    }
    co = (PyCodeObject *)v;
    v = PyEval_EvalCode((PyObject*)co, globals, locals);
    if (v && flags)
        flags->cf_flags |= (co->co_flags & PyCF_MASK);
    Py_DECREF(co);
    return v;
}

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static void wait_for_thread_shutdown ( void  ) [static]

Definition at line 2173 of file pythonrun.c.

{
#ifdef WITH_THREAD
    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_CallMethod(threading, "_shutdown", "");
    if (result == NULL) {
        PyErr_WriteUnraisable(threading);
    }
    else {
        Py_DECREF(result);
    }
    Py_DECREF(threading);
#endif
}

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Variable Documentation

Definition at line 93 of file pythonrun.c.

Definition at line 2139 of file graminit.c.

const char* cause_message = "of the following exception:\n\n" [static]

Definition at line 1629 of file pythonrun.c.

const char* context_message = "another exception occurred:\n\n" [static]

Definition at line 1633 of file pythonrun.c.

wchar_t* default_home = NULL [static]

Definition at line 691 of file pythonrun.c.

wchar_t env_home[PATH_MAX+1] [static]

Definition at line 692 of file pythonrun.c.

void(* exitfuncs[NEXITFUNCS])(void) [static]

Definition at line 2197 of file pythonrun.c.

int initialized = 0 [static]

Definition at line 103 of file pythonrun.c.

int nexitfuncs = 0 [static]

Definition at line 2198 of file pythonrun.c.

wchar_t* progname = "python" [static]

Definition at line 676 of file pythonrun.c.

Definition at line 85 of file pythonrun.c.

Definition at line 79 of file pythonrun.c.

Definition at line 86 of file pythonrun.c.

Definition at line 88 of file pythonrun.c.

Definition at line 89 of file pythonrun.c.

Definition at line 83 of file pythonrun.c.

Definition at line 82 of file pythonrun.c.

Definition at line 84 of file pythonrun.c.

Definition at line 90 of file pythonrun.c.

Definition at line 81 of file pythonrun.c.

Definition at line 91 of file pythonrun.c.

Definition at line 87 of file pythonrun.c.

Definition at line 80 of file pythonrun.c.

void(* pyexitfunc)(void) = NULL [static]

Definition at line 2151 of file pythonrun.c.