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@ -9,12 +9,12 @@ Exception Handling
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The functions described in this chapter will let you handle and raise Python
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exceptions. It is important to understand some of the basics of Python
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exception handling. It works somewhat like the Unix :cdata:`errno` variable:
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exception handling. It works somewhat like the Unix :c:data:`errno` variable:
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there is a global indicator (per thread) of the last error that occurred. Most
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functions don't clear this on success, but will set it to indicate the cause of
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the error on failure. Most functions also return an error indicator, usually
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*NULL* if they are supposed to return a pointer, or ``-1`` if they return an
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integer (exception: the :cfunc:`PyArg_\*` functions return ``1`` for success and
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integer (exception: the :c:func:`PyArg_\*` functions return ``1`` for success and
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``0`` for failure).
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When a function must fail because some function it called failed, it generally
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@ -35,7 +35,7 @@ in various ways. There is a separate error indicator for each thread.
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Either alphabetical or some kind of structure.
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.. cfunction:: void PyErr_PrintEx(int set_sys_last_vars)
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.. c:function:: void PyErr_PrintEx(int set_sys_last_vars)
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Print a standard traceback to ``sys.stderr`` and clear the error indicator.
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Call this function only when the error indicator is set. (Otherwise it will
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@ -46,35 +46,35 @@ in various ways. There is a separate error indicator for each thread.
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type, value and traceback of the printed exception, respectively.
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.. cfunction:: void PyErr_Print()
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.. c:function:: void PyErr_Print()
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Alias for ``PyErr_PrintEx(1)``.
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.. cfunction:: PyObject* PyErr_Occurred()
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.. c:function:: PyObject* PyErr_Occurred()
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Test whether the error indicator is set. If set, return the exception *type*
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(the first argument to the last call to one of the :cfunc:`PyErr_Set\*`
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functions or to :cfunc:`PyErr_Restore`). If not set, return *NULL*. You do not
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own a reference to the return value, so you do not need to :cfunc:`Py_DECREF`
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(the first argument to the last call to one of the :c:func:`PyErr_Set\*`
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functions or to :c:func:`PyErr_Restore`). If not set, return *NULL*. You do not
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own a reference to the return value, so you do not need to :c:func:`Py_DECREF`
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it.
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.. note::
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Do not compare the return value to a specific exception; use
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:cfunc:`PyErr_ExceptionMatches` instead, shown below. (The comparison could
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:c:func:`PyErr_ExceptionMatches` instead, shown below. (The comparison could
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easily fail since the exception may be an instance instead of a class, in the
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case of a class exception, or it may the a subclass of the expected exception.)
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.. cfunction:: int PyErr_ExceptionMatches(PyObject *exc)
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.. c:function:: int PyErr_ExceptionMatches(PyObject *exc)
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Equivalent to ``PyErr_GivenExceptionMatches(PyErr_Occurred(), exc)``. This
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should only be called when an exception is actually set; a memory access
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violation will occur if no exception has been raised.
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.. cfunction:: int PyErr_GivenExceptionMatches(PyObject *given, PyObject *exc)
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.. c:function:: int PyErr_GivenExceptionMatches(PyObject *given, PyObject *exc)
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Return true if the *given* exception matches the exception in *exc*. If
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*exc* is a class object, this also returns true when *given* is an instance
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@ -82,22 +82,22 @@ in various ways. There is a separate error indicator for each thread.
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recursively in subtuples) are searched for a match.
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.. cfunction:: void PyErr_NormalizeException(PyObject**exc, PyObject**val, PyObject**tb)
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.. c:function:: void PyErr_NormalizeException(PyObject**exc, PyObject**val, PyObject**tb)
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Under certain circumstances, the values returned by :cfunc:`PyErr_Fetch` below
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Under certain circumstances, the values returned by :c:func:`PyErr_Fetch` below
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can be "unnormalized", meaning that ``*exc`` is a class object but ``*val`` is
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not an instance of the same class. This function can be used to instantiate
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the class in that case. If the values are already normalized, nothing happens.
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The delayed normalization is implemented to improve performance.
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.. cfunction:: void PyErr_Clear()
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.. c:function:: void PyErr_Clear()
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Clear the error indicator. If the error indicator is not set, there is no
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effect.
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.. cfunction:: void PyErr_Fetch(PyObject **ptype, PyObject **pvalue, PyObject **ptraceback)
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.. c:function:: void PyErr_Fetch(PyObject **ptype, PyObject **pvalue, PyObject **ptraceback)
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Retrieve the error indicator into three variables whose addresses are passed.
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If the error indicator is not set, set all three variables to *NULL*. If it is
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@ -110,7 +110,7 @@ in various ways. There is a separate error indicator for each thread.
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by code that needs to save and restore the error indicator temporarily.
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.. cfunction:: void PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback)
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.. c:function:: void PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback)
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Set the error indicator from the three objects. If the error indicator is
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already set, it is cleared first. If the objects are *NULL*, the error
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@ -125,29 +125,29 @@ in various ways. There is a separate error indicator for each thread.
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.. note::
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This function is normally only used by code that needs to save and restore the
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error indicator temporarily; use :cfunc:`PyErr_Fetch` to save the current
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error indicator temporarily; use :c:func:`PyErr_Fetch` to save the current
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exception state.
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.. cfunction:: void PyErr_SetString(PyObject *type, const char *message)
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.. c:function:: void PyErr_SetString(PyObject *type, const char *message)
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This is the most common way to set the error indicator. The first argument
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specifies the exception type; it is normally one of the standard exceptions,
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e.g. :cdata:`PyExc_RuntimeError`. You need not increment its reference count.
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e.g. :c:data:`PyExc_RuntimeError`. You need not increment its reference count.
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The second argument is an error message; it is converted to a string object.
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.. cfunction:: void PyErr_SetObject(PyObject *type, PyObject *value)
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.. c:function:: void PyErr_SetObject(PyObject *type, PyObject *value)
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This function is similar to :cfunc:`PyErr_SetString` but lets you specify an
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This function is similar to :c:func:`PyErr_SetString` but lets you specify an
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arbitrary Python object for the "value" of the exception.
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.. cfunction:: PyObject* PyErr_Format(PyObject *exception, const char *format, ...)
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.. c:function:: PyObject* PyErr_Format(PyObject *exception, const char *format, ...)
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This function sets the error indicator and returns *NULL*. *exception* should be
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a Python exception (class, not an instance). *format* should be an ASCII-encoded string,
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containing format codes, similar to :cfunc:`printf`. The ``width.precision``
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containing format codes, similar to :c:func:`printf`. The ``width.precision``
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before a format code is parsed, but the width part is ignored.
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.. % This should be exactly the same as the table in PyString_FromFormat.
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@ -220,81 +220,81 @@ in various ways. There is a separate error indicator for each thread.
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Support for `"%lld"` and `"%llu"` added.
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.. cfunction:: void PyErr_SetNone(PyObject *type)
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.. c:function:: void PyErr_SetNone(PyObject *type)
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This is a shorthand for ``PyErr_SetObject(type, Py_None)``.
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.. cfunction:: int PyErr_BadArgument()
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.. c:function:: int PyErr_BadArgument()
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This is a shorthand for ``PyErr_SetString(PyExc_TypeError, message)``, where
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*message* indicates that a built-in operation was invoked with an illegal
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argument. It is mostly for internal use.
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.. cfunction:: PyObject* PyErr_NoMemory()
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.. c:function:: PyObject* PyErr_NoMemory()
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This is a shorthand for ``PyErr_SetNone(PyExc_MemoryError)``; it returns *NULL*
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so an object allocation function can write ``return PyErr_NoMemory();`` when it
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runs out of memory.
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.. cfunction:: PyObject* PyErr_SetFromErrno(PyObject *type)
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.. c:function:: PyObject* PyErr_SetFromErrno(PyObject *type)
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.. index:: single: strerror()
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This is a convenience function to raise an exception when a C library function
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has returned an error and set the C variable :cdata:`errno`. It constructs a
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tuple object whose first item is the integer :cdata:`errno` value and whose
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second item is the corresponding error message (gotten from :cfunc:`strerror`),
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has returned an error and set the C variable :c:data:`errno`. It constructs a
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tuple object whose first item is the integer :c:data:`errno` value and whose
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second item is the corresponding error message (gotten from :c:func:`strerror`),
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and then calls ``PyErr_SetObject(type, object)``. On Unix, when the
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:cdata:`errno` value is :const:`EINTR`, indicating an interrupted system call,
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this calls :cfunc:`PyErr_CheckSignals`, and if that set the error indicator,
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:c:data:`errno` value is :const:`EINTR`, indicating an interrupted system call,
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this calls :c:func:`PyErr_CheckSignals`, and if that set the error indicator,
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leaves it set to that. The function always returns *NULL*, so a wrapper
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function around a system call can write ``return PyErr_SetFromErrno(type);``
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when the system call returns an error.
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.. cfunction:: PyObject* PyErr_SetFromErrnoWithFilename(PyObject *type, const char *filename)
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.. c:function:: PyObject* PyErr_SetFromErrnoWithFilename(PyObject *type, const char *filename)
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Similar to :cfunc:`PyErr_SetFromErrno`, with the additional behavior that if
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Similar to :c:func:`PyErr_SetFromErrno`, with the additional behavior that if
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*filename* is not *NULL*, it is passed to the constructor of *type* as a third
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parameter. In the case of exceptions such as :exc:`IOError` and :exc:`OSError`,
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this is used to define the :attr:`filename` attribute of the exception instance.
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.. cfunction:: PyObject* PyErr_SetFromWindowsErr(int ierr)
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.. c:function:: PyObject* PyErr_SetFromWindowsErr(int ierr)
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This is a convenience function to raise :exc:`WindowsError`. If called with
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*ierr* of :cdata:`0`, the error code returned by a call to :cfunc:`GetLastError`
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is used instead. It calls the Win32 function :cfunc:`FormatMessage` to retrieve
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the Windows description of error code given by *ierr* or :cfunc:`GetLastError`,
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*ierr* of :c:data:`0`, the error code returned by a call to :c:func:`GetLastError`
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is used instead. It calls the Win32 function :c:func:`FormatMessage` to retrieve
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the Windows description of error code given by *ierr* or :c:func:`GetLastError`,
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then it constructs a tuple object whose first item is the *ierr* value and whose
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second item is the corresponding error message (gotten from
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:cfunc:`FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
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:c:func:`FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
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object)``. This function always returns *NULL*. Availability: Windows.
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.. cfunction:: PyObject* PyErr_SetExcFromWindowsErr(PyObject *type, int ierr)
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.. c:function:: PyObject* PyErr_SetExcFromWindowsErr(PyObject *type, int ierr)
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Similar to :cfunc:`PyErr_SetFromWindowsErr`, with an additional parameter
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Similar to :c:func:`PyErr_SetFromWindowsErr`, with an additional parameter
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specifying the exception type to be raised. Availability: Windows.
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.. cfunction:: PyObject* PyErr_SetFromWindowsErrWithFilename(int ierr, const char *filename)
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.. c:function:: PyObject* PyErr_SetFromWindowsErrWithFilename(int ierr, const char *filename)
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Similar to :cfunc:`PyErr_SetFromWindowsErr`, with the additional behavior that
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Similar to :c:func:`PyErr_SetFromWindowsErr`, with the additional behavior that
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if *filename* is not *NULL*, it is passed to the constructor of
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:exc:`WindowsError` as a third parameter. Availability: Windows.
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.. cfunction:: PyObject* PyErr_SetExcFromWindowsErrWithFilename(PyObject *type, int ierr, char *filename)
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.. c:function:: PyObject* PyErr_SetExcFromWindowsErrWithFilename(PyObject *type, int ierr, char *filename)
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Similar to :cfunc:`PyErr_SetFromWindowsErrWithFilename`, with an additional
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Similar to :c:func:`PyErr_SetFromWindowsErrWithFilename`, with an additional
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parameter specifying the exception type to be raised. Availability: Windows.
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.. cfunction:: void PyErr_SyntaxLocationEx(char *filename, int lineno, int col_offset)
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.. c:function:: void PyErr_SyntaxLocationEx(char *filename, int lineno, int col_offset)
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Set file, line, and offset information for the current exception. If the
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current exception is not a :exc:`SyntaxError`, then it sets additional
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@ -304,13 +304,13 @@ in various ways. There is a separate error indicator for each thread.
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.. versionadded:: 3.2
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.. cfunction:: void PyErr_SyntaxLocation(char *filename, int lineno)
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.. c:function:: void PyErr_SyntaxLocation(char *filename, int lineno)
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Like :cfunc:`PyErr_SyntaxLocationExc`, but the col_offset parameter is
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Like :c:func:`PyErr_SyntaxLocationExc`, but the col_offset parameter is
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omitted.
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.. cfunction:: void PyErr_BadInternalCall()
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.. c:function:: void PyErr_BadInternalCall()
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This is a shorthand for ``PyErr_SetString(PyExc_SystemError, message)``,
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where *message* indicates that an internal operation (e.g. a Python/C API
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@ -318,13 +318,13 @@ in various ways. There is a separate error indicator for each thread.
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use.
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.. cfunction:: int PyErr_WarnEx(PyObject *category, char *message, int stack_level)
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.. c:function:: int PyErr_WarnEx(PyObject *category, char *message, int stack_level)
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Issue a warning message. The *category* argument is a warning category (see
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below) or *NULL*; the *message* argument is a message string. *stack_level* is a
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positive number giving a number of stack frames; the warning will be issued from
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the currently executing line of code in that stack frame. A *stack_level* of 1
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is the function calling :cfunc:`PyErr_WarnEx`, 2 is the function above that,
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is the function calling :c:func:`PyErr_WarnEx`, 2 is the function above that,
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and so forth.
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This function normally prints a warning message to *sys.stderr*; however, it is
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@ -336,26 +336,26 @@ in various ways. There is a separate error indicator for each thread.
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is raised. (It is not possible to determine whether a warning message is
|
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actually printed, nor what the reason is for the exception; this is
|
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intentional.) If an exception is raised, the caller should do its normal
|
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exception handling (for example, :cfunc:`Py_DECREF` owned references and return
|
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exception handling (for example, :c:func:`Py_DECREF` owned references and return
|
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an error value).
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Warning categories must be subclasses of :cdata:`Warning`; the default warning
|
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category is :cdata:`RuntimeWarning`. The standard Python warning categories are
|
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Warning categories must be subclasses of :c:data:`Warning`; the default warning
|
||||
category is :c:data:`RuntimeWarning`. The standard Python warning categories are
|
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available as global variables whose names are ``PyExc_`` followed by the Python
|
||||
exception name. These have the type :ctype:`PyObject\*`; they are all class
|
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objects. Their names are :cdata:`PyExc_Warning`, :cdata:`PyExc_UserWarning`,
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:cdata:`PyExc_UnicodeWarning`, :cdata:`PyExc_DeprecationWarning`,
|
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:cdata:`PyExc_SyntaxWarning`, :cdata:`PyExc_RuntimeWarning`, and
|
||||
:cdata:`PyExc_FutureWarning`. :cdata:`PyExc_Warning` is a subclass of
|
||||
:cdata:`PyExc_Exception`; the other warning categories are subclasses of
|
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:cdata:`PyExc_Warning`.
|
||||
exception name. These have the type :c:type:`PyObject\*`; they are all class
|
||||
objects. Their names are :c:data:`PyExc_Warning`, :c:data:`PyExc_UserWarning`,
|
||||
:c:data:`PyExc_UnicodeWarning`, :c:data:`PyExc_DeprecationWarning`,
|
||||
:c:data:`PyExc_SyntaxWarning`, :c:data:`PyExc_RuntimeWarning`, and
|
||||
:c:data:`PyExc_FutureWarning`. :c:data:`PyExc_Warning` is a subclass of
|
||||
:c:data:`PyExc_Exception`; the other warning categories are subclasses of
|
||||
:c:data:`PyExc_Warning`.
|
||||
|
||||
For information about warning control, see the documentation for the
|
||||
:mod:`warnings` module and the :option:`-W` option in the command line
|
||||
documentation. There is no C API for warning control.
|
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|
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.. cfunction:: int PyErr_WarnExplicit(PyObject *category, const char *message, const char *filename, int lineno, const char *module, PyObject *registry)
|
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.. c:function:: int PyErr_WarnExplicit(PyObject *category, const char *message, const char *filename, int lineno, const char *module, PyObject *registry)
|
||||
|
||||
Issue a warning message with explicit control over all warning attributes. This
|
||||
is a straightforward wrapper around the Python function
|
||||
|
@ -364,14 +364,14 @@ in various ways. There is a separate error indicator for each thread.
|
|||
described there.
|
||||
|
||||
|
||||
.. cfunction:: int PyErr_WarnFormat(PyObject *category, Py_ssize_t stack_level, const char *format, ...)
|
||||
.. c:function:: int PyErr_WarnFormat(PyObject *category, Py_ssize_t stack_level, const char *format, ...)
|
||||
|
||||
Function similar to :cfunc:`PyErr_WarnEx`, but use
|
||||
:cfunc:`PyUnicode_FromFormatV` to format the warning message.
|
||||
Function similar to :c:func:`PyErr_WarnEx`, but use
|
||||
:c:func:`PyUnicode_FromFormatV` to format the warning message.
|
||||
|
||||
.. versionadded:: 3.2
|
||||
|
||||
.. cfunction:: int PyErr_CheckSignals()
|
||||
.. c:function:: int PyErr_CheckSignals()
|
||||
|
||||
.. index::
|
||||
module: signal
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||||
|
@ -388,21 +388,21 @@ in various ways. There is a separate error indicator for each thread.
|
|||
cleared if it was previously set.
|
||||
|
||||
|
||||
.. cfunction:: void PyErr_SetInterrupt()
|
||||
.. c:function:: void PyErr_SetInterrupt()
|
||||
|
||||
.. index::
|
||||
single: SIGINT
|
||||
single: KeyboardInterrupt (built-in exception)
|
||||
|
||||
This function simulates the effect of a :const:`SIGINT` signal arriving --- the
|
||||
next time :cfunc:`PyErr_CheckSignals` is called, :exc:`KeyboardInterrupt` will
|
||||
next time :c:func:`PyErr_CheckSignals` is called, :exc:`KeyboardInterrupt` will
|
||||
be raised. It may be called without holding the interpreter lock.
|
||||
|
||||
.. % XXX This was described as obsolete, but is used in
|
||||
.. % _thread.interrupt_main() (used from IDLE), so it's still needed.
|
||||
|
||||
|
||||
.. cfunction:: int PySignal_SetWakeupFd(int fd)
|
||||
.. c:function:: int PySignal_SetWakeupFd(int fd)
|
||||
|
||||
This utility function specifies a file descriptor to which a ``'\0'`` byte will
|
||||
be written whenever a signal is received. It returns the previous such file
|
||||
|
@ -412,13 +412,13 @@ in various ways. There is a separate error indicator for each thread.
|
|||
only be called from the main thread.
|
||||
|
||||
|
||||
.. cfunction:: PyObject* PyErr_NewException(char *name, PyObject *base, PyObject *dict)
|
||||
.. c:function:: PyObject* PyErr_NewException(char *name, PyObject *base, PyObject *dict)
|
||||
|
||||
This utility function creates and returns a new exception object. The *name*
|
||||
argument must be the name of the new exception, a C string of the form
|
||||
``module.class``. The *base* and *dict* arguments are normally *NULL*. This
|
||||
creates a class object derived from :exc:`Exception` (accessible in C as
|
||||
:cdata:`PyExc_Exception`).
|
||||
:c:data:`PyExc_Exception`).
|
||||
|
||||
The :attr:`__module__` attribute of the new class is set to the first part (up
|
||||
to the last dot) of the *name* argument, and the class name is set to the last
|
||||
|
@ -427,16 +427,16 @@ in various ways. There is a separate error indicator for each thread.
|
|||
argument can be used to specify a dictionary of class variables and methods.
|
||||
|
||||
|
||||
.. cfunction:: PyObject* PyErr_NewExceptionWithDoc(char *name, char *doc, PyObject *base, PyObject *dict)
|
||||
.. c:function:: PyObject* PyErr_NewExceptionWithDoc(char *name, char *doc, PyObject *base, PyObject *dict)
|
||||
|
||||
Same as :cfunc:`PyErr_NewException`, except that the new exception class can
|
||||
Same as :c:func:`PyErr_NewException`, except that the new exception class can
|
||||
easily be given a docstring: If *doc* is non-*NULL*, it will be used as the
|
||||
docstring for the exception class.
|
||||
|
||||
.. versionadded:: 3.2
|
||||
|
||||
|
||||
.. cfunction:: void PyErr_WriteUnraisable(PyObject *obj)
|
||||
.. c:function:: void PyErr_WriteUnraisable(PyObject *obj)
|
||||
|
||||
This utility function prints a warning message to ``sys.stderr`` when an
|
||||
exception has been set but it is impossible for the interpreter to actually
|
||||
|
@ -451,20 +451,20 @@ in various ways. There is a separate error indicator for each thread.
|
|||
Exception Objects
|
||||
=================
|
||||
|
||||
.. cfunction:: PyObject* PyException_GetTraceback(PyObject *ex)
|
||||
.. c:function:: PyObject* PyException_GetTraceback(PyObject *ex)
|
||||
|
||||
Return the traceback associated with the exception as a new reference, as
|
||||
accessible from Python through :attr:`__traceback__`. If there is no
|
||||
traceback associated, this returns *NULL*.
|
||||
|
||||
|
||||
.. cfunction:: int PyException_SetTraceback(PyObject *ex, PyObject *tb)
|
||||
.. c:function:: int PyException_SetTraceback(PyObject *ex, PyObject *tb)
|
||||
|
||||
Set the traceback associated with the exception to *tb*. Use ``Py_None`` to
|
||||
clear it.
|
||||
|
||||
|
||||
.. cfunction:: PyObject* PyException_GetContext(PyObject *ex)
|
||||
.. c:function:: PyObject* PyException_GetContext(PyObject *ex)
|
||||
|
||||
Return the context (another exception instance during whose handling *ex* was
|
||||
raised) associated with the exception as a new reference, as accessible from
|
||||
|
@ -472,14 +472,14 @@ Exception Objects
|
|||
returns *NULL*.
|
||||
|
||||
|
||||
.. cfunction:: void PyException_SetContext(PyObject *ex, PyObject *ctx)
|
||||
.. c:function:: void PyException_SetContext(PyObject *ex, PyObject *ctx)
|
||||
|
||||
Set the context associated with the exception to *ctx*. Use *NULL* to clear
|
||||
it. There is no type check to make sure that *ctx* is an exception instance.
|
||||
This steals a reference to *ctx*.
|
||||
|
||||
|
||||
.. cfunction:: PyObject* PyException_GetCause(PyObject *ex)
|
||||
.. c:function:: PyObject* PyException_GetCause(PyObject *ex)
|
||||
|
||||
Return the cause (another exception instance set by ``raise ... from ...``)
|
||||
associated with the exception as a new reference, as accessible from Python
|
||||
|
@ -487,7 +487,7 @@ Exception Objects
|
|||
*NULL*.
|
||||
|
||||
|
||||
.. cfunction:: void PyException_SetCause(PyObject *ex, PyObject *ctx)
|
||||
.. c:function:: void PyException_SetCause(PyObject *ex, PyObject *ctx)
|
||||
|
||||
Set the cause associated with the exception to *ctx*. Use *NULL* to clear
|
||||
it. There is no type check to make sure that *ctx* is an exception instance.
|
||||
|
@ -502,12 +502,12 @@ level, both in the core and in extension modules. They are needed if the
|
|||
recursive code does not necessarily invoke Python code (which tracks its
|
||||
recursion depth automatically).
|
||||
|
||||
.. cfunction:: int Py_EnterRecursiveCall(char *where)
|
||||
.. c:function:: int Py_EnterRecursiveCall(char *where)
|
||||
|
||||
Marks a point where a recursive C-level call is about to be performed.
|
||||
|
||||
If :const:`USE_STACKCHECK` is defined, this function checks if the the OS
|
||||
stack overflowed using :cfunc:`PyOS_CheckStack`. In this is the case, it
|
||||
stack overflowed using :c:func:`PyOS_CheckStack`. In this is the case, it
|
||||
sets a :exc:`MemoryError` and returns a nonzero value.
|
||||
|
||||
The function then checks if the recursion limit is reached. If this is the
|
||||
|
@ -518,10 +518,10 @@ recursion depth automatically).
|
|||
concatenated to the :exc:`RuntimeError` message caused by the recursion depth
|
||||
limit.
|
||||
|
||||
.. cfunction:: void Py_LeaveRecursiveCall()
|
||||
.. c:function:: void Py_LeaveRecursiveCall()
|
||||
|
||||
Ends a :cfunc:`Py_EnterRecursiveCall`. Must be called once for each
|
||||
*successful* invocation of :cfunc:`Py_EnterRecursiveCall`.
|
||||
Ends a :c:func:`Py_EnterRecursiveCall`. Must be called once for each
|
||||
*successful* invocation of :c:func:`Py_EnterRecursiveCall`.
|
||||
|
||||
|
||||
.. _standardexceptions:
|
||||
|
@ -531,68 +531,68 @@ Standard Exceptions
|
|||
|
||||
All standard Python exceptions are available as global variables whose names are
|
||||
``PyExc_`` followed by the Python exception name. These have the type
|
||||
:ctype:`PyObject\*`; they are all class objects. For completeness, here are all
|
||||
:c:type:`PyObject\*`; they are all class objects. For completeness, here are all
|
||||
the variables:
|
||||
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| C Name | Python Name | Notes |
|
||||
+====================================+============================+==========+
|
||||
| :cdata:`PyExc_BaseException` | :exc:`BaseException` | \(1) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_Exception` | :exc:`Exception` | \(1) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_ArithmeticError` | :exc:`ArithmeticError` | \(1) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_LookupError` | :exc:`LookupError` | \(1) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_AssertionError` | :exc:`AssertionError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_AttributeError` | :exc:`AttributeError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_EOFError` | :exc:`EOFError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_EnvironmentError` | :exc:`EnvironmentError` | \(1) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_FloatingPointError` | :exc:`FloatingPointError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_IOError` | :exc:`IOError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_ImportError` | :exc:`ImportError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_IndexError` | :exc:`IndexError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_KeyError` | :exc:`KeyError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_KeyboardInterrupt` | :exc:`KeyboardInterrupt` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_MemoryError` | :exc:`MemoryError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_NameError` | :exc:`NameError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_NotImplementedError` | :exc:`NotImplementedError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_OSError` | :exc:`OSError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_OverflowError` | :exc:`OverflowError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_ReferenceError` | :exc:`ReferenceError` | \(2) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_RuntimeError` | :exc:`RuntimeError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_SyntaxError` | :exc:`SyntaxError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_SystemError` | :exc:`SystemError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_SystemExit` | :exc:`SystemExit` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_TypeError` | :exc:`TypeError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_ValueError` | :exc:`ValueError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_WindowsError` | :exc:`WindowsError` | \(3) |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
| :cdata:`PyExc_ZeroDivisionError` | :exc:`ZeroDivisionError` | |
|
||||
+------------------------------------+----------------------------+----------+
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| C Name | Python Name | Notes |
|
||||
+=====================================+============================+==========+
|
||||
| :c:data:`PyExc_BaseException` | :exc:`BaseException` | \(1) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_Exception` | :exc:`Exception` | \(1) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_ArithmeticError` | :exc:`ArithmeticError` | \(1) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_LookupError` | :exc:`LookupError` | \(1) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_AssertionError` | :exc:`AssertionError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_AttributeError` | :exc:`AttributeError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_EOFError` | :exc:`EOFError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_EnvironmentError` | :exc:`EnvironmentError` | \(1) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_FloatingPointError` | :exc:`FloatingPointError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_IOError` | :exc:`IOError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_ImportError` | :exc:`ImportError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_IndexError` | :exc:`IndexError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_KeyError` | :exc:`KeyError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_KeyboardInterrupt` | :exc:`KeyboardInterrupt` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_MemoryError` | :exc:`MemoryError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_NameError` | :exc:`NameError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_NotImplementedError` | :exc:`NotImplementedError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_OSError` | :exc:`OSError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_OverflowError` | :exc:`OverflowError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_ReferenceError` | :exc:`ReferenceError` | \(2) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_RuntimeError` | :exc:`RuntimeError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_SyntaxError` | :exc:`SyntaxError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_SystemError` | :exc:`SystemError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_SystemExit` | :exc:`SystemExit` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_TypeError` | :exc:`TypeError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_ValueError` | :exc:`ValueError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_WindowsError` | :exc:`WindowsError` | \(3) |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
| :c:data:`PyExc_ZeroDivisionError` | :exc:`ZeroDivisionError` | |
|
||||
+-------------------------------------+----------------------------+----------+
|
||||
|
||||
.. index::
|
||||
single: PyExc_BaseException
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue