author | martin.trojer@nokia.com |
Fri, 31 Jul 2009 15:01:17 +0100 | |
changeset 1 | 2fb8b9db1c86 |
permissions | -rw-r--r-- |
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.. highlightlang:: c |
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.. _exceptionhandling: |
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****************** |
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Exception Handling |
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****************** |
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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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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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``0`` for failure). |
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When a function must fail because some function it called failed, it generally |
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doesn't set the error indicator; the function it called already set it. It is |
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responsible for either handling the error and clearing the exception or |
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returning after cleaning up any resources it holds (such as object references or |
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memory allocations); it should *not* continue normally if it is not prepared to |
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handle the error. If returning due to an error, it is important to indicate to |
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the caller that an error has been set. If the error is not handled or carefully |
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propagated, additional calls into the Python/C API may not behave as intended |
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and may fail in mysterious ways. |
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.. index:: |
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single: exc_type (in module sys) |
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single: exc_value (in module sys) |
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single: exc_traceback (in module sys) |
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The error indicator consists of three Python objects corresponding to the |
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Python variables ``sys.exc_type``, ``sys.exc_value`` and ``sys.exc_traceback``. |
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API functions exist to interact with the error indicator in various ways. There |
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is a separate error indicator for each thread. |
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.. XXX Order of these should be more thoughtful. |
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Either alphabetical or some kind of structure. |
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.. cfunction:: void PyErr_Print() |
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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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cause a fatal error!) |
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.. cfunction:: 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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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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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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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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Return true if the *given* exception matches the exception in *exc*. If *exc* |
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is a class object, this also returns true when *given* is an instance of a |
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subclass. If *exc* is a tuple, all exceptions in the tuple (and recursively in |
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subtuples) are searched for a match. If *given* is *NULL*, a memory access |
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violation will occur. |
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.. cfunction:: 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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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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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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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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set, it will be cleared and you own a reference to each object retrieved. The |
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value and traceback object may be *NULL* even when the type object is not. |
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.. note:: |
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106 |
|
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107 |
This function is normally only used by code that needs to handle exceptions or |
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108 |
by code that needs to save and restore the error indicator temporarily. |
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|
109 |
|
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|
110 |
|
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111 |
.. cfunction:: void PyErr_Restore(PyObject *type, PyObject *value, PyObject *traceback) |
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112 |
|
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113 |
Set the error indicator from the three objects. If the error indicator is |
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114 |
already set, it is cleared first. If the objects are *NULL*, the error |
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115 |
indicator is cleared. Do not pass a *NULL* type and non-*NULL* value or |
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116 |
traceback. The exception type should be a class. Do not pass an invalid |
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117 |
exception type or value. (Violating these rules will cause subtle problems |
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118 |
later.) This call takes away a reference to each object: you must own a |
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119 |
reference to each object before the call and after the call you no longer own |
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120 |
these references. (If you don't understand this, don't use this function. I |
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121 |
warned you.) |
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122 |
|
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123 |
.. note:: |
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124 |
|
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125 |
This function is normally only used by code that needs to save and restore the |
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126 |
error indicator temporarily; use :cfunc:`PyErr_Fetch` to save the current |
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127 |
exception state. |
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128 |
|
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129 |
|
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.. cfunction:: void PyErr_SetString(PyObject *type, const char *message) |
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131 |
|
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132 |
This is the most common way to set the error indicator. The first argument |
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133 |
specifies the exception type; it is normally one of the standard exceptions, |
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134 |
e.g. :cdata:`PyExc_RuntimeError`. You need not increment its reference count. |
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135 |
The second argument is an error message; it is converted to a string object. |
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|
136 |
|
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|
137 |
|
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|
138 |
.. cfunction:: void PyErr_SetObject(PyObject *type, PyObject *value) |
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|
139 |
|
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|
140 |
This function is similar to :cfunc:`PyErr_SetString` but lets you specify an |
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|
141 |
arbitrary Python object for the "value" of the exception. |
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|
142 |
|
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|
143 |
|
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|
144 |
.. cfunction:: PyObject* PyErr_Format(PyObject *exception, const char *format, ...) |
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|
145 |
|
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|
146 |
This function sets the error indicator and returns *NULL*. *exception* should be |
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|
147 |
a Python exception (class, not an instance). *format* should be a string, |
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|
148 |
containing format codes, similar to :cfunc:`printf`. The ``width.precision`` |
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|
149 |
before a format code is parsed, but the width part is ignored. |
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|
150 |
|
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|
151 |
.. % This should be exactly the same as the table in PyString_FromFormat. |
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|
152 |
.. % One should just refer to the other. |
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|
153 |
.. % The descriptions for %zd and %zu are wrong, but the truth is complicated |
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|
154 |
.. % because not all compilers support the %z width modifier -- we fake it |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
155 |
.. % when necessary via interpolating PY_FORMAT_SIZE_T. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
156 |
.. % %u, %lu, %zu should have "new in Python 2.5" blurbs. |
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|
157 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
158 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
159 |
| Format Characters | Type | Comment | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
160 |
+===================+===============+================================+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
161 |
| :attr:`%%` | *n/a* | The literal % character. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
162 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
163 |
| :attr:`%c` | int | A single character, | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
164 |
| | | represented as an C int. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
165 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
166 |
| :attr:`%d` | int | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
167 |
| | | ``printf("%d")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
168 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
169 |
| :attr:`%u` | unsigned int | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
170 |
| | | ``printf("%u")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
171 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
172 |
| :attr:`%ld` | long | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
173 |
| | | ``printf("%ld")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
174 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
175 |
| :attr:`%lu` | unsigned long | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
176 |
| | | ``printf("%lu")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
177 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
178 |
| :attr:`%zd` | Py_ssize_t | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
179 |
| | | ``printf("%zd")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
180 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
181 |
| :attr:`%zu` | size_t | Exactly equivalent to | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
182 |
| | | ``printf("%zu")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
183 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
184 |
| :attr:`%i` | int | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
185 |
| | | ``printf("%i")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
186 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
187 |
| :attr:`%x` | int | Exactly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
188 |
| | | ``printf("%x")``. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
189 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
190 |
| :attr:`%s` | char\* | A null-terminated C character | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
191 |
| | | array. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
192 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
193 |
| :attr:`%p` | void\* | The hex representation of a C | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
194 |
| | | pointer. Mostly equivalent to | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
195 |
| | | ``printf("%p")`` except that | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
196 |
| | | it is guaranteed to start with | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
197 |
| | | the literal ``0x`` regardless | |
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|
198 |
| | | of what the platform's | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
199 |
| | | ``printf`` yields. | |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
200 |
+-------------------+---------------+--------------------------------+ |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
201 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
202 |
An unrecognized format character causes all the rest of the format string to be |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
203 |
copied as-is to the result string, and any extra arguments discarded. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
204 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
205 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
206 |
.. cfunction:: void PyErr_SetNone(PyObject *type) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
207 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
208 |
This is a shorthand for ``PyErr_SetObject(type, Py_None)``. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
209 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
210 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
211 |
.. cfunction:: 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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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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.. 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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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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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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Similar to :cfunc:`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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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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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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object)``. This function always returns *NULL*. Availability: Windows. |
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.. cfunction:: PyObject* PyErr_SetExcFromWindowsErr(PyObject *type, int ierr) |
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Similar to :cfunc:`PyErr_SetFromWindowsErr`, with an additional parameter |
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specifying the exception type to be raised. Availability: Windows. |
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.. versionadded:: 2.3 |
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.. cfunction:: 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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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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Similar to :cfunc:`PyErr_SetFromWindowsErrWithFilename`, with an additional |
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parameter specifying the exception type to be raised. Availability: Windows. |
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|
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.. versionadded:: 2.3 |
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|
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.. cfunction:: void PyErr_BadInternalCall() |
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This is a shorthand for ``PyErr_SetString(PyExc_TypeError, message)``, where |
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*message* indicates that an internal operation (e.g. a Python/C API function) |
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was invoked with an illegal argument. It is mostly for internal use. |
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|
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.. cfunction:: int PyErr_WarnEx(PyObject *category, char *message, int stacklevel) |
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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. *stacklevel* 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 *stacklevel* of 1 |
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is the function calling :cfunc:`PyErr_WarnEx`, 2 is the function above that, |
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and so forth. |
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|
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This function normally prints a warning message to *sys.stderr*; however, it is |
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also possible that the user has specified that warnings are to be turned into |
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errors, and in that case this will raise an exception. It is also possible that |
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the function raises an exception because of a problem with the warning machinery |
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(the implementation imports the :mod:`warnings` module to do the heavy lifting). |
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The return value is ``0`` if no exception is raised, or ``-1`` if an exception |
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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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an error value). |
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|
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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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available as global variables whose names are ``PyExc_`` followed by the Python |
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|
315 |
exception name. These have the type :ctype:`PyObject\*`; they are all class |
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|
316 |
objects. Their names are :cdata:`PyExc_Warning`, :cdata:`PyExc_UserWarning`, |
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|
317 |
:cdata:`PyExc_UnicodeWarning`, :cdata:`PyExc_DeprecationWarning`, |
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|
318 |
:cdata:`PyExc_SyntaxWarning`, :cdata:`PyExc_RuntimeWarning`, and |
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|
319 |
:cdata:`PyExc_FutureWarning`. :cdata:`PyExc_Warning` is a subclass of |
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|
320 |
:cdata:`PyExc_Exception`; the other warning categories are subclasses of |
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|
321 |
:cdata:`PyExc_Warning`. |
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|
322 |
|
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|
323 |
For information about warning control, see the documentation for the |
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|
324 |
:mod:`warnings` module and the :option:`-W` option in the command line |
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|
325 |
documentation. There is no C API for warning control. |
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|
326 |
|
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|
327 |
|
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|
328 |
.. cfunction:: int PyErr_Warn(PyObject *category, char *message) |
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|
329 |
|
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|
330 |
Issue a warning message. The *category* argument is a warning category (see |
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|
331 |
below) or *NULL*; the *message* argument is a message string. The warning will |
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|
332 |
appear to be issued from the function calling :cfunc:`PyErr_Warn`, equivalent to |
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|
333 |
calling :cfunc:`PyErr_WarnEx` with a *stacklevel* of 1. |
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|
334 |
|
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|
335 |
Deprecated; use :cfunc:`PyErr_WarnEx` instead. |
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|
336 |
|
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|
337 |
|
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|
338 |
.. cfunction:: int PyErr_WarnExplicit(PyObject *category, const char *message, const char *filename, int lineno, const char *module, PyObject *registry) |
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|
339 |
|
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|
340 |
Issue a warning message with explicit control over all warning attributes. This |
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|
341 |
is a straightforward wrapper around the Python function |
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|
342 |
:func:`warnings.warn_explicit`, see there for more information. The *module* |
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|
343 |
and *registry* arguments may be set to *NULL* to get the default effect |
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|
344 |
described there. |
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|
345 |
|
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|
346 |
|
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|
347 |
.. cfunction:: int PyErr_WarnPy3k(char *message, int stacklevel) |
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|
348 |
|
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|
349 |
Issue a :exc:`DeprecationWarning` with the given *message* and *stacklevel* |
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|
350 |
if the :cdata:`Py_Py3kWarningFlag` flag is enabled. |
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|
351 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
352 |
.. versionadded:: 2.6 |
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|
353 |
|
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|
354 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
355 |
.. cfunction:: int PyErr_CheckSignals() |
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|
356 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
357 |
.. index:: |
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|
358 |
module: signal |
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|
359 |
single: SIGINT |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
360 |
single: KeyboardInterrupt (built-in exception) |
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|
361 |
|
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|
362 |
This function interacts with Python's signal handling. It checks whether a |
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|
363 |
signal has been sent to the processes and if so, invokes the corresponding |
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|
364 |
signal handler. If the :mod:`signal` module is supported, this can invoke a |
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|
365 |
signal handler written in Python. In all cases, the default effect for |
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|
366 |
:const:`SIGINT` is to raise the :exc:`KeyboardInterrupt` exception. If an |
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|
367 |
exception is raised the error indicator is set and the function returns ``-1``; |
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|
368 |
otherwise the function returns ``0``. The error indicator may or may not be |
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|
369 |
cleared if it was previously set. |
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|
370 |
|
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|
371 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
372 |
.. cfunction:: void PyErr_SetInterrupt() |
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|
373 |
|
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|
374 |
.. index:: |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
375 |
single: SIGINT |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
376 |
single: KeyboardInterrupt (built-in exception) |
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|
377 |
|
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|
378 |
This function simulates the effect of a :const:`SIGINT` signal arriving --- the |
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|
379 |
next time :cfunc:`PyErr_CheckSignals` is called, :exc:`KeyboardInterrupt` will |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
380 |
be raised. It may be called without holding the interpreter lock. |
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|
381 |
|
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|
382 |
.. % XXX This was described as obsolete, but is used in |
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|
383 |
.. % thread.interrupt_main() (used from IDLE), so it's still needed. |
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|
384 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
385 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
386 |
.. cfunction:: int PySignal_SetWakeupFd(int fd) |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
387 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
388 |
This utility function specifies a file descriptor to which a ``'\0'`` byte will |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
389 |
be written whenever a signal is received. It returns the previous such file |
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|
390 |
descriptor. The value ``-1`` disables the feature; this is the initial state. |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
391 |
This is equivalent to :func:`signal.set_wakeup_fd` in Python, but without any |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
392 |
error checking. *fd* should be a valid file descriptor. The function should |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
393 |
only be called from the main thread. |
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|
394 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
395 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
396 |
.. cfunction:: PyObject* PyErr_NewException(char *name, PyObject *base, PyObject *dict) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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changeset
|
397 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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|
398 |
This utility function creates and returns a new exception object. The *name* |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
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|
399 |
argument must be the name of the new exception, a C string of the form |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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|
400 |
``module.class``. The *base* and *dict* arguments are normally *NULL*. This |
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
401 |
creates a class object derived from :exc:`Exception` (accessible in C as |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
402 |
:cdata:`PyExc_Exception`). |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
403 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
404 |
The :attr:`__module__` attribute of the new class is set to the first part (up |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
405 |
to the last dot) of the *name* argument, and the class name is set to the last |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
406 |
part (after the last dot). The *base* argument can be used to specify alternate |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
407 |
base classes; it can either be only one class or a tuple of classes. The *dict* |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
408 |
argument can be used to specify a dictionary of class variables and methods. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
409 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
410 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
411 |
.. cfunction:: void PyErr_WriteUnraisable(PyObject *obj) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
412 |
|
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Initial QEMU (symbian-qemu-0.9.1-12) import
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diff
changeset
|
413 |
This utility function prints a warning message to ``sys.stderr`` when an |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
414 |
exception has been set but it is impossible for the interpreter to actually |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
415 |
raise the exception. It is used, for example, when an exception occurs in an |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
416 |
:meth:`__del__` method. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
417 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
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parents:
diff
changeset
|
418 |
The function is called with a single argument *obj* that identifies the context |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
419 |
in which the unraisable exception occurred. The repr of *obj* will be printed in |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
420 |
the warning message. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
421 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
422 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
423 |
.. _standardexceptions: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
424 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
425 |
Standard Exceptions |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
426 |
=================== |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
427 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
428 |
All standard Python exceptions are available as global variables whose names are |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
429 |
``PyExc_`` followed by the Python exception name. These have the type |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
430 |
:ctype:`PyObject\*`; they are all class objects. For completeness, here are all |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
431 |
the variables: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
432 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
433 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
434 |
| C Name | Python Name | Notes | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
435 |
+====================================+============================+==========+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
436 |
| :cdata:`PyExc_BaseException` | :exc:`BaseException` | (1), (4) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
437 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
438 |
| :cdata:`PyExc_Exception` | :exc:`Exception` | \(1) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
439 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
440 |
| :cdata:`PyExc_StandardError` | :exc:`StandardError` | \(1) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
441 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
442 |
| :cdata:`PyExc_ArithmeticError` | :exc:`ArithmeticError` | \(1) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
443 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
444 |
| :cdata:`PyExc_LookupError` | :exc:`LookupError` | \(1) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
445 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
446 |
| :cdata:`PyExc_AssertionError` | :exc:`AssertionError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
447 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
448 |
| :cdata:`PyExc_AttributeError` | :exc:`AttributeError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
449 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
450 |
| :cdata:`PyExc_EOFError` | :exc:`EOFError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
451 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
452 |
| :cdata:`PyExc_EnvironmentError` | :exc:`EnvironmentError` | \(1) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
453 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
454 |
| :cdata:`PyExc_FloatingPointError` | :exc:`FloatingPointError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
455 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
456 |
| :cdata:`PyExc_IOError` | :exc:`IOError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
457 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
458 |
| :cdata:`PyExc_ImportError` | :exc:`ImportError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
459 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
460 |
| :cdata:`PyExc_IndexError` | :exc:`IndexError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
461 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
462 |
| :cdata:`PyExc_KeyError` | :exc:`KeyError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
463 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
464 |
| :cdata:`PyExc_KeyboardInterrupt` | :exc:`KeyboardInterrupt` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
465 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
466 |
| :cdata:`PyExc_MemoryError` | :exc:`MemoryError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
467 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
468 |
| :cdata:`PyExc_NameError` | :exc:`NameError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
469 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
470 |
| :cdata:`PyExc_NotImplementedError` | :exc:`NotImplementedError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
471 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
472 |
| :cdata:`PyExc_OSError` | :exc:`OSError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
473 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
474 |
| :cdata:`PyExc_OverflowError` | :exc:`OverflowError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
475 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
476 |
| :cdata:`PyExc_ReferenceError` | :exc:`ReferenceError` | \(2) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
477 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
478 |
| :cdata:`PyExc_RuntimeError` | :exc:`RuntimeError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
479 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
480 |
| :cdata:`PyExc_SyntaxError` | :exc:`SyntaxError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
481 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
482 |
| :cdata:`PyExc_SystemError` | :exc:`SystemError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
483 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
484 |
| :cdata:`PyExc_SystemExit` | :exc:`SystemExit` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
485 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
486 |
| :cdata:`PyExc_TypeError` | :exc:`TypeError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
487 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
488 |
| :cdata:`PyExc_ValueError` | :exc:`ValueError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
489 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
490 |
| :cdata:`PyExc_WindowsError` | :exc:`WindowsError` | \(3) | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
491 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
492 |
| :cdata:`PyExc_ZeroDivisionError` | :exc:`ZeroDivisionError` | | |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
493 |
+------------------------------------+----------------------------+----------+ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
494 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
495 |
.. index:: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
496 |
single: PyExc_BaseException |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
497 |
single: PyExc_Exception |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
498 |
single: PyExc_StandardError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
499 |
single: PyExc_ArithmeticError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
500 |
single: PyExc_LookupError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
501 |
single: PyExc_AssertionError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
502 |
single: PyExc_AttributeError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
503 |
single: PyExc_EOFError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
504 |
single: PyExc_EnvironmentError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
505 |
single: PyExc_FloatingPointError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
506 |
single: PyExc_IOError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
507 |
single: PyExc_ImportError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
508 |
single: PyExc_IndexError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
509 |
single: PyExc_KeyError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
510 |
single: PyExc_KeyboardInterrupt |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
511 |
single: PyExc_MemoryError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
512 |
single: PyExc_NameError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
513 |
single: PyExc_NotImplementedError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
514 |
single: PyExc_OSError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
515 |
single: PyExc_OverflowError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
516 |
single: PyExc_ReferenceError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
517 |
single: PyExc_RuntimeError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
518 |
single: PyExc_SyntaxError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
519 |
single: PyExc_SystemError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
520 |
single: PyExc_SystemExit |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
521 |
single: PyExc_TypeError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
522 |
single: PyExc_ValueError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
523 |
single: PyExc_WindowsError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
524 |
single: PyExc_ZeroDivisionError |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
525 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
526 |
Notes: |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
527 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
528 |
(1) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
529 |
This is a base class for other standard exceptions. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
530 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
531 |
(2) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
532 |
This is the same as :exc:`weakref.ReferenceError`. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
533 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
534 |
(3) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
535 |
Only defined on Windows; protect code that uses this by testing that the |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
536 |
preprocessor macro ``MS_WINDOWS`` is defined. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
537 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
538 |
(4) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
539 |
.. versionadded:: 2.5 |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
540 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
541 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
542 |
Deprecation of String Exceptions |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
543 |
================================ |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
544 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
545 |
.. index:: single: BaseException (built-in exception) |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
546 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
547 |
All exceptions built into Python or provided in the standard library are derived |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
548 |
from :exc:`BaseException`. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
549 |
|
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
550 |
String exceptions are still supported in the interpreter to allow existing code |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
551 |
to run unmodified, but this will also change in a future release. |
2fb8b9db1c86
Initial QEMU (symbian-qemu-0.9.1-12) import
martin.trojer@nokia.com
parents:
diff
changeset
|
552 |