[3.12] gh-107298: Fix more Sphinx warnings in the C API doc (GH-107329) (GH-107376)

Declare the following functions as macros, since they are actually
macros. It avoids a warning on "TYPE" or "macro" argument.

* PyMem_New()
* PyMem_Resize()
* PyModule_AddIntMacro()
* PyModule_AddStringMacro()
* PyObject_GC_New()
* PyObject_GC_NewVar()
* PyObject_New()
* PyObject_NewVar()

Add C standard C types to nitpick_ignore in Doc/conf.py:

* int64_t
* uint64_t
* uintptr_t

No longer ignore non existing "__int" type in nitpick_ignore.

Update Doc/tools/.nitignore.
(cherry picked from commit 8d61a71f9c)

Co-authored-by: Victor Stinner <vstinner@python.org>
This commit is contained in:
Serhiy Storchaka 2023-07-28 09:56:52 +03:00 committed by GitHub
parent ef7422a1b9
commit e6a4b10820
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
23 changed files with 122 additions and 119 deletions

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@ -27,22 +27,25 @@ Allocating Objects on the Heap
length information for a variable-size object.
.. c:function:: TYPE* PyObject_New(TYPE, PyTypeObject *type)
.. c:macro:: PyObject_New(TYPE, typeobj)
Allocate a new Python object using the C structure type *TYPE* and the
Python type object *type*. Fields not defined by the Python object header
Python type object *typeobj* (``PyTypeObject*``).
Fields not defined by the Python object header
are not initialized; the object's reference count will be one. The size of
the memory allocation is determined from the :c:member:`~PyTypeObject.tp_basicsize` field of
the type object.
.. c:function:: TYPE* PyObject_NewVar(TYPE, PyTypeObject *type, Py_ssize_t size)
.. c:macro:: PyObject_NewVar(TYPE, typeobj, size)
Allocate a new Python object using the C structure type *TYPE* and the
Python type object *type*. Fields not defined by the Python object header
Python type object *typeobj* (``PyTypeObject*``).
Fields not defined by the Python object header
are not initialized. The allocated memory allows for the *TYPE* structure
plus *size* fields of the size given by the :c:member:`~PyTypeObject.tp_itemsize` field of
*type*. This is useful for implementing objects like tuples, which are
plus *size* (``Py_ssize_t``) fields of the size
given by the :c:member:`~PyTypeObject.tp_itemsize` field of
*typeobj*. This is useful for implementing objects like tuples, which are
able to determine their size at construction time. Embedding the array of
fields into the same allocation decreases the number of allocations,
improving the memory management efficiency.
@ -50,8 +53,8 @@ Allocating Objects on the Heap
.. c:function:: void PyObject_Del(void *op)
Releases memory allocated to an object using :c:func:`PyObject_New` or
:c:func:`PyObject_NewVar`. This is normally called from the
Releases memory allocated to an object using :c:macro:`PyObject_New` or
:c:macro:`PyObject_NewVar`. This is normally called from the
:c:member:`~PyTypeObject.tp_dealloc` handler specified in the object's type. The fields of
the object should not be accessed after this call as the memory is no
longer a valid Python object.

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@ -64,7 +64,7 @@ Refer to :ref:`using-capsules` for more information on using these objects.
The *name* parameter must compare exactly to the name stored in the capsule.
If the name stored in the capsule is ``NULL``, the *name* passed in must also
be ``NULL``. Python uses the C function :c:func:`strcmp` to compare capsule
be ``NULL``. Python uses the C function :c:func:`!strcmp` to compare capsule
names.

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@ -64,7 +64,7 @@ pointers. This is consistent throughout the API.
representation.
If *divisor* is null, this method returns zero and sets
:c:data:`errno` to :c:macro:`EDOM`.
:c:data:`errno` to :c:macro:`!EDOM`.
.. c:function:: Py_complex _Py_c_pow(Py_complex num, Py_complex exp)
@ -73,7 +73,7 @@ pointers. This is consistent throughout the API.
representation.
If *num* is null and *exp* is not a positive real number,
this method returns zero and sets :c:data:`errno` to :c:macro:`EDOM`.
this method returns zero and sets :c:data:`errno` to :c:macro:`!EDOM`.
Complex Numbers as Python Objects

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@ -119,10 +119,10 @@ The following functions provide locale-independent string to number conversions.
.. c:function:: int PyOS_stricmp(const char *s1, const char *s2)
Case insensitive comparison of strings. The function works almost
identically to :c:func:`strcmp` except that it ignores the case.
identically to :c:func:`!strcmp` except that it ignores the case.
.. c:function:: int PyOS_strnicmp(const char *s1, const char *s2, Py_ssize_t size)
Case insensitive comparison of strings. The function works almost
identically to :c:func:`strncmp` except that it ignores the case.
identically to :c:func:`!strncmp` except that it ignores the case.

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@ -83,7 +83,7 @@ Printing and clearing
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
raise the exception. It is used, for example, when an exception occurs in an
:meth:`__del__` method.
:meth:`~object.__del__` method.
The function is called with a single argument *obj* that identifies the context
in which the unraisable exception occurred. If possible,
@ -165,7 +165,7 @@ For convenience, some of these functions will always return a
tuple object whose first item is the integer :c:data:`errno` value and whose
second item is the corresponding error message (gotten from :c:func:`!strerror`),
and then calls ``PyErr_SetObject(type, object)``. On Unix, when the
:c:data:`errno` value is :c:macro:`EINTR`, indicating an interrupted system call,
:c:data:`errno` value is :c:macro:`!EINTR`, indicating an interrupted system call,
this calls :c:func:`PyErr_CheckSignals`, and if that set the error indicator,
leaves it set to that. The function always returns ``NULL``, so a wrapper
function around a system call can write ``return PyErr_SetFromErrno(type);``
@ -177,7 +177,7 @@ For convenience, some of these functions will always return a
Similar to :c:func:`PyErr_SetFromErrno`, with the additional behavior that if
*filenameObject* is not ``NULL``, it is passed to the constructor of *type* as
a third parameter. In the case of :exc:`OSError` exception,
this is used to define the :attr:`filename` attribute of the
this is used to define the :attr:`!filename` attribute of the
exception instance.
@ -200,12 +200,12 @@ For convenience, some of these functions will always return a
.. c:function:: PyObject* PyErr_SetFromWindowsErr(int ierr)
This is a convenience function to raise :exc:`WindowsError`. If called with
*ierr* of ``0``, the error code returned by a call to :c:func:`GetLastError`
is used instead. It calls the Win32 function :c:func:`FormatMessage` to retrieve
the Windows description of error code given by *ierr* or :c:func:`GetLastError`,
*ierr* of ``0``, the error code returned by a call to :c:func:`!GetLastError`
is used instead. It calls the Win32 function :c:func:`!FormatMessage` to retrieve
the Windows description of error code given by *ierr* or :c:func:`!GetLastError`,
then it constructs a tuple object whose first item is the *ierr* value and whose
second item is the corresponding error message (gotten from
:c:func:`FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
:c:func:`!FormatMessage`), and then calls ``PyErr_SetObject(PyExc_WindowsError,
object)``. This function always returns ``NULL``.
.. availability:: Windows.
@ -631,7 +631,7 @@ Signal Handling
be interruptible by user requests (such as by pressing Ctrl-C).
.. note::
The default Python signal handler for :c:macro:`SIGINT` raises the
The default Python signal handler for :c:macro:`!SIGINT` raises the
:exc:`KeyboardInterrupt` exception.
@ -642,7 +642,7 @@ Signal Handling
single: SIGINT
single: KeyboardInterrupt (built-in exception)
Simulate the effect of a :c:macro:`SIGINT` signal arriving.
Simulate the effect of a :c:macro:`!SIGINT` signal arriving.
This is equivalent to ``PyErr_SetInterruptEx(SIGINT)``.
.. note::

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@ -25,8 +25,8 @@ include the :c:macro:`Py_TPFLAGS_HAVE_GC` and provide an implementation of the
Constructors for container types must conform to two rules:
#. The memory for the object must be allocated using :c:func:`PyObject_GC_New`
or :c:func:`PyObject_GC_NewVar`.
#. The memory for the object must be allocated using :c:macro:`PyObject_GC_New`
or :c:macro:`PyObject_GC_NewVar`.
#. Once all the fields which may contain references to other containers are
initialized, it must call :c:func:`PyObject_GC_Track`.
@ -52,19 +52,19 @@ rules:
class that implements the garbage collector protocol and the child class
does *not* include the :c:macro:`Py_TPFLAGS_HAVE_GC` flag.
.. c:function:: TYPE* PyObject_GC_New(TYPE, PyTypeObject *type)
.. c:macro:: PyObject_GC_New(TYPE, typeobj)
Analogous to :c:func:`PyObject_New` but for container objects with the
Analogous to :c:macro:`PyObject_New` but for container objects with the
:c:macro:`Py_TPFLAGS_HAVE_GC` flag set.
.. c:function:: TYPE* PyObject_GC_NewVar(TYPE, PyTypeObject *type, Py_ssize_t size)
.. c:macro:: PyObject_GC_NewVar(TYPE, typeobj, size)
Analogous to :c:func:`PyObject_NewVar` but for container objects with the
Analogous to :c:macro:`PyObject_NewVar` but for container objects with the
:c:macro:`Py_TPFLAGS_HAVE_GC` flag set.
.. c:function:: PyObject* PyUnstable_Object_GC_NewWithExtraData(PyTypeObject *type, size_t extra_size)
Analogous to :c:func:`PyObject_GC_New` but allocates *extra_size*
Analogous to :c:macro:`PyObject_GC_New` but allocates *extra_size*
bytes at the end of the object (at offset
:c:member:`~PyTypeObject.tp_basicsize`).
The allocated memory is initialized to zeros,
@ -85,7 +85,7 @@ rules:
.. c:function:: TYPE* PyObject_GC_Resize(TYPE, PyVarObject *op, Py_ssize_t newsize)
Resize an object allocated by :c:func:`PyObject_NewVar`. Returns the
Resize an object allocated by :c:macro:`PyObject_NewVar`. Returns the
resized object or ``NULL`` on failure. *op* must not be tracked by the collector yet.
@ -128,8 +128,8 @@ rules:
.. c:function:: void PyObject_GC_Del(void *op)
Releases memory allocated to an object using :c:func:`PyObject_GC_New` or
:c:func:`PyObject_GC_NewVar`.
Releases memory allocated to an object using :c:macro:`PyObject_GC_New` or
:c:macro:`PyObject_GC_NewVar`.
.. c:function:: void PyObject_GC_UnTrack(void *op)

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@ -135,10 +135,10 @@ Importing Modules
The module's :attr:`__spec__` and :attr:`__loader__` will be set, if
not set already, with the appropriate values. The spec's loader will
be set to the module's ``__loader__`` (if set) and to an instance of
:class:`SourceFileLoader` otherwise.
:class:`~importlib.machinery.SourceFileLoader` otherwise.
The module's :attr:`__file__` attribute will be set to the code object's
:attr:`co_filename`. If applicable, :attr:`__cached__` will also
:attr:`!co_filename`. If applicable, :attr:`__cached__` will also
be set.
This function will reload the module if it was already imported. See
@ -225,7 +225,7 @@ Importing Modules
.. c:function:: PyObject* PyImport_GetImporter(PyObject *path)
Return a finder object for a :data:`sys.path`/:attr:`pkg.__path__` item
Return a finder object for a :data:`sys.path`/:attr:`!pkg.__path__` item
*path*, possibly by fetching it from the :data:`sys.path_importer_cache`
dict. If it wasn't yet cached, traverse :data:`sys.path_hooks` until a hook
is found that can handle the path item. Return ``None`` if no hook could;

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@ -25,7 +25,7 @@ The following functions can be safely called before Python is initialized:
* :c:func:`PyImport_AppendInittab`
* :c:func:`PyImport_ExtendInittab`
* :c:func:`PyInitFrozenExtensions`
* :c:func:`!PyInitFrozenExtensions`
* :c:func:`PyMem_SetAllocator`
* :c:func:`PyMem_SetupDebugHooks`
* :c:func:`PyObject_SetArenaAllocator`
@ -157,7 +157,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
:c:member:`PyConfig.use_environment` should be used instead, see
:ref:`Python Initialization Configuration <init-config>`.
Ignore all :envvar:`PYTHON*` environment variables, e.g.
Ignore all :envvar:`!PYTHON*` environment variables, e.g.
:envvar:`PYTHONPATH` and :envvar:`PYTHONHOME`, that might be set.
Set by the :option:`-E` and :option:`-I` options.
@ -230,7 +230,7 @@ to 1 and ``-bb`` sets :c:data:`Py_BytesWarningFlag` to 2.
:ref:`Python Initialization Configuration <init-config>`.
If the flag is non-zero, use :class:`io.FileIO` instead of
:class:`WindowsConsoleIO` for :mod:`sys` standard streams.
:class:`!io._WindowsConsoleIO` for :mod:`sys` standard streams.
Set to ``1`` if the :envvar:`PYTHONLEGACYWINDOWSSTDIO` environment
variable is set to a non-empty string.
@ -401,7 +401,7 @@ Initializing and finalizing the interpreter
the application.
**Bugs and caveats:** The destruction of modules and objects in modules is done
in random order; this may cause destructors (:meth:`__del__` methods) to fail
in random order; this may cause destructors (:meth:`~object.__del__` methods) to fail
when they depend on other objects (even functions) or modules. Dynamically
loaded extension modules loaded by Python are not unloaded. Small amounts of
memory allocated by the Python interpreter may not be freed (if you find a leak,
@ -485,12 +485,12 @@ Process-wide parameters
interpreter will change the contents of this storage.
Use :c:func:`Py_DecodeLocale` to decode a bytes string to get a
:c:expr:`wchar_*` string.
:c:expr:`wchar_t *` string.
.. deprecated:: 3.11
.. c:function:: wchar* Py_GetProgramName()
.. c:function:: wchar_t* Py_GetProgramName()
.. index:: single: Py_SetProgramName()
@ -981,7 +981,7 @@ the fork, and releasing them afterwards. In addition, it resets any
:ref:`lock-objects` in the child. When extending or embedding Python, there
is no way to inform Python of additional (non-Python) locks that need to be
acquired before or reset after a fork. OS facilities such as
:c:func:`pthread_atfork` would need to be used to accomplish the same thing.
:c:func:`!pthread_atfork` would need to be used to accomplish the same thing.
Additionally, when extending or embedding Python, calling :c:func:`fork`
directly rather than through :func:`os.fork` (and returning to or calling
into Python) may result in a deadlock by one of Python's internal locks
@ -1087,7 +1087,7 @@ code, or when embedding the Python interpreter:
.. note::
Calling this function from a thread when the runtime is finalizing
will terminate the thread, even if the thread was not created by Python.
You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
You can use :c:func:`!_Py_IsFinalizing` or :func:`sys.is_finalizing` to
check if the interpreter is in process of being finalized before calling
this function to avoid unwanted termination.
@ -1133,7 +1133,7 @@ with sub-interpreters:
.. note::
Calling this function from a thread when the runtime is finalizing
will terminate the thread, even if the thread was not created by Python.
You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
You can use :c:func:`!_Py_IsFinalizing` or :func:`sys.is_finalizing` to
check if the interpreter is in process of being finalized before calling
this function to avoid unwanted termination.
@ -1415,7 +1415,7 @@ All of the following functions must be called after :c:func:`Py_Initialize`.
.. note::
Calling this function from a thread when the runtime is finalizing
will terminate the thread, even if the thread was not created by Python.
You can use :c:func:`_Py_IsFinalizing` or :func:`sys.is_finalizing` to
You can use :c:func:`!_Py_IsFinalizing` or :func:`sys.is_finalizing` to
check if the interpreter is in process of being finalized before calling
this function to avoid unwanted termination.

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@ -871,7 +871,7 @@ PyConfig
.. c:member:: int legacy_windows_stdio
If non-zero, use :class:`io.FileIO` instead of
:class:`io.WindowsConsoleIO` for :data:`sys.stdin`, :data:`sys.stdout`
:class:`!io._WindowsConsoleIO` for :data:`sys.stdin`, :data:`sys.stdout`
and :data:`sys.stderr`.
Set to ``1`` if the :envvar:`PYTHONLEGACYWINDOWSSTDIO` environment
@ -1120,7 +1120,7 @@ PyConfig
Set to ``0`` by the :option:`-S` command line option.
:data:`sys.flags.no_site` is set to the inverted value of
:data:`sys.flags.no_site <sys.flags>` is set to the inverted value of
:c:member:`~PyConfig.site_import`.
Default: ``1``.

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@ -136,7 +136,7 @@ need to be held.
The :ref:`default raw memory allocator <default-memory-allocators>` uses
the following functions: :c:func:`malloc`, :c:func:`calloc`, :c:func:`realloc`
and :c:func:`free`; call ``malloc(1)`` (or ``calloc(1, 1)``) when requesting
and :c:func:`!free`; call ``malloc(1)`` (or ``calloc(1, 1)``) when requesting
zero bytes.
.. versionadded:: 3.4
@ -264,14 +264,14 @@ The following type-oriented macros are provided for convenience. Note that
*TYPE* refers to any C type.
.. c:function:: TYPE* PyMem_New(TYPE, size_t n)
.. c:macro:: PyMem_New(TYPE, n)
Same as :c:func:`PyMem_Malloc`, but allocates ``(n * sizeof(TYPE))`` bytes of
memory. Returns a pointer cast to :c:expr:`TYPE*`. The memory will not have
been initialized in any way.
.. c:function:: TYPE* PyMem_Resize(void *p, TYPE, size_t n)
.. c:macro:: PyMem_Resize(p, TYPE, n)
Same as :c:func:`PyMem_Realloc`, but the memory block is resized to ``(n *
sizeof(TYPE))`` bytes. Returns a pointer cast to :c:expr:`TYPE*`. On return,
@ -423,7 +423,7 @@ Customize Memory Allocators
+----------------------------------------------------------+---------------------------------------+
.. versionchanged:: 3.5
The :c:type:`PyMemAllocator` structure was renamed to
The :c:type:`!PyMemAllocator` structure was renamed to
:c:type:`PyMemAllocatorEx` and a new ``calloc`` field was added.
@ -627,8 +627,8 @@ with a fixed size of 256 KiB. It falls back to :c:func:`PyMem_RawMalloc` and
The arena allocator uses the following functions:
* :c:func:`VirtualAlloc` and :c:func:`VirtualFree` on Windows,
* :c:func:`mmap` and :c:func:`munmap` if available,
* :c:func:`!VirtualAlloc` and :c:func:`!VirtualFree` on Windows,
* :c:func:`!mmap` and :c:func:`!munmap` if available,
* :c:func:`malloc` and :c:func:`free` otherwise.
This allocator is disabled if Python is configured with the
@ -732,8 +732,8 @@ allocators operating on different heaps. ::
free(buf1); /* Fatal -- should be PyMem_Del() */
In addition to the functions aimed at handling raw memory blocks from the Python
heap, objects in Python are allocated and released with :c:func:`PyObject_New`,
:c:func:`PyObject_NewVar` and :c:func:`PyObject_Del`.
heap, objects in Python are allocated and released with :c:macro:`PyObject_New`,
:c:macro:`PyObject_NewVar` and :c:func:`PyObject_Del`.
These will be explained in the next chapter on defining and implementing new
object types in C.

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@ -282,7 +282,7 @@ An alternate way to specify extensions is to request "multi-phase initialization
Extension modules created this way behave more like Python modules: the
initialization is split between the *creation phase*, when the module object
is created, and the *execution phase*, when it is populated.
The distinction is similar to the :py:meth:`__new__` and :py:meth:`__init__` methods
The distinction is similar to the :py:meth:`!__new__` and :py:meth:`!__init__` methods
of classes.
Unlike modules created using single-phase initialization, these modules are not
@ -293,7 +293,7 @@ By default, multiple modules created from the same definition should be
independent: changes to one should not affect the others.
This means that all state should be specific to the module object (using e.g.
using :c:func:`PyModule_GetState`), or its contents (such as the module's
:attr:`__dict__` or individual classes created with :c:func:`PyType_FromSpec`).
:attr:`~object.__dict__` or individual classes created with :c:func:`PyType_FromSpec`).
All modules created using multi-phase initialization are expected to support
:ref:`sub-interpreters <sub-interpreter-support>`. Making sure multiple modules
@ -555,7 +555,7 @@ state:
``NULL``-terminated. Return ``-1`` on error, ``0`` on success.
.. c:function:: int PyModule_AddIntMacro(PyObject *module, macro)
.. c:macro:: PyModule_AddIntMacro(module, macro)
Add an int constant to *module*. The name and the value are taken from
*macro*. For example ``PyModule_AddIntMacro(module, AF_INET)`` adds the int
@ -563,7 +563,7 @@ state:
Return ``-1`` on error, ``0`` on success.
.. c:function:: int PyModule_AddStringMacro(PyObject *module, macro)
.. c:macro:: PyModule_AddStringMacro(module, macro)
Add a string constant to *module*.

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@ -122,7 +122,7 @@ or :class:`frozenset` or instances of their subtypes.
.. c:function:: int PySet_Contains(PyObject *anyset, PyObject *key)
Return ``1`` if found, ``0`` if not found, and ``-1`` if an error is encountered. Unlike
the Python :meth:`__contains__` method, this function does not automatically
the Python :meth:`~object.__contains__` method, this function does not automatically
convert unhashable sets into temporary frozensets. Raise a :exc:`TypeError` if
the *key* is unhashable. Raise :exc:`PyExc_SystemError` if *anyset* is not a
:class:`set`, :class:`frozenset`, or an instance of a subtype.

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@ -393,7 +393,7 @@ definition with the same method name.
*METH_COEXIST*, the default is to skip repeated definitions. Since slot
wrappers are loaded before the method table, the existence of a
*sq_contains* slot, for example, would generate a wrapped method named
:meth:`__contains__` and preclude the loading of a corresponding
:meth:`~object.__contains__` and preclude the loading of a corresponding
PyCFunction with the same name. With the flag defined, the PyCFunction
will be loaded in place of the wrapper object and will co-exist with the
slot. This is helpful because calls to PyCFunctions are optimized more

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@ -414,7 +414,7 @@ Process Control
This function should only be invoked when a condition is detected that would
make it dangerous to continue using the Python interpreter; e.g., when the
object administration appears to be corrupted. On Unix, the standard C library
function :c:func:`abort` is called which will attempt to produce a :file:`core`
function :c:func:`!abort` is called which will attempt to produce a :file:`core`
file.
The ``Py_FatalError()`` function is replaced with a macro which logs

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@ -579,7 +579,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
name, followed by a dot, followed by the type name; for built-in types, it
should be just the type name. If the module is a submodule of a package, the
full package name is part of the full module name. For example, a type named
:class:`T` defined in module :mod:`!M` in subpackage :mod:`!Q` in package :mod:`!P`
:class:`!T` defined in module :mod:`!M` in subpackage :mod:`!Q` in package :mod:`!P`
should have the :c:member:`~PyTypeObject.tp_name` initializer ``"P.Q.M.T"``.
For :ref:`dynamically allocated type objects <heap-types>`,
@ -673,9 +673,9 @@ and :c:data:`PyType_Type` effectively act as defaults.)
permissible to call the object deallocator directly instead of via
:c:member:`~PyTypeObject.tp_free`. The object deallocator should be the one used to allocate the
instance; this is normally :c:func:`PyObject_Del` if the instance was allocated
using :c:func:`PyObject_New` or :c:func:`PyObject_VarNew`, or
using :c:macro:`PyObject_New` or :c:macro:`PyObject_NewVar`, or
:c:func:`PyObject_GC_Del` if the instance was allocated using
:c:func:`PyObject_GC_New` or :c:func:`PyObject_GC_NewVar`.
:c:macro:`PyObject_GC_New` or :c:macro:`PyObject_GC_NewVar`.
If the type supports garbage collection (has the :c:macro:`Py_TPFLAGS_HAVE_GC`
flag bit set), the destructor should call :c:func:`PyObject_GC_UnTrack`
@ -1092,7 +1092,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
.. c:macro:: Py_TPFLAGS_HAVE_GC
This bit is set when the object supports garbage collection. If this bit
is set, instances must be created using :c:func:`PyObject_GC_New` and
is set, instances must be created using :c:macro:`PyObject_GC_New` and
destroyed using :c:func:`PyObject_GC_Del`. More information in section
:ref:`supporting-cycle-detection`. This bit also implies that the
GC-related fields :c:member:`~PyTypeObject.tp_traverse` and :c:member:`~PyTypeObject.tp_clear` are present in
@ -1180,7 +1180,7 @@ and :c:data:`PyType_Type` effectively act as defaults.)
Indicates that the variable-sized portion of an instance of this type is
at the end of the instance's memory area, at an offset of
:c:expr:`Py_TYPE(obj)->tp_basicsize` (which may be different in each
``Py_TYPE(obj)->tp_basicsize`` (which may be different in each
subclass).
When setting this flag, be sure that all superclasses either

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@ -608,7 +608,7 @@ APIs:
Py_ssize_t how_many)
Copy characters from one Unicode object into another. This function performs
character conversion when necessary and falls back to :c:func:`memcpy` if
character conversion when necessary and falls back to :c:func:`!memcpy` if
possible. Returns ``-1`` and sets an exception on error, otherwise returns
the number of copied characters.
@ -721,7 +721,7 @@ system.
.. c:function:: PyObject* PyUnicode_DecodeLocale(const char *str, const char *errors)
Similar to :c:func:`PyUnicode_DecodeLocaleAndSize`, but compute the string
length using :c:func:`strlen`.
length using :c:func:`!strlen`.
.. versionadded:: 3.3
@ -879,7 +879,7 @@ wchar_t Support
most C functions. If *size* is ``NULL`` and the :c:expr:`wchar_t*` string
contains null characters a :exc:`ValueError` is raised.
Returns a buffer allocated by :c:func:`PyMem_New` (use
Returns a buffer allocated by :c:macro:`PyMem_New` (use
:c:func:`PyMem_Free` to free it) on success. On error, returns ``NULL``
and *\*size* is undefined. Raises a :exc:`MemoryError` if memory allocation
is failed.