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-rw-r--r--Doc/c-api/import.rst77
1 files changed, 59 insertions, 18 deletions
diff --git a/Doc/c-api/import.rst b/Doc/c-api/import.rst
index cf48363..c718057 100644
--- a/Doc/c-api/import.rst
+++ b/Doc/c-api/import.rst
@@ -30,13 +30,13 @@ Importing Modules
.. c:function:: PyObject* PyImport_ImportModuleNoBlock(const char *name)
- This version of :c:func:`PyImport_ImportModule` does not block. It's intended
- to be used in C functions that import other modules to execute a function.
- The import may block if another thread holds the import lock. The function
- :c:func:`PyImport_ImportModuleNoBlock` never blocks. It first tries to fetch
- the module from sys.modules and falls back to :c:func:`PyImport_ImportModule`
- unless the lock is held, in which case the function will raise an
- :exc:`ImportError`.
+ This function is a deprecated alias of :c:func:`PyImport_ImportModule`.
+
+ .. versionchanged:: 3.3
+ This function used to fail immediately when the import lock was held
+ by another thread. In Python 3.3 though, the locking scheme switched
+ to per-module locks for most purposes, so this function's special
+ behaviour isn't needed anymore.
.. c:function:: PyObject* PyImport_ImportModuleEx(char *name, PyObject *globals, PyObject *locals, PyObject *fromlist)
@@ -57,7 +57,7 @@ Importing Modules
:c:func:`PyImport_ImportModule`.
-.. c:function:: PyObject* PyImport_ImportModuleLevel(char *name, PyObject *globals, PyObject *locals, PyObject *fromlist, int level)
+.. c:function:: PyObject* PyImport_ImportModuleLevelObject(PyObject *name, PyObject *globals, PyObject *locals, PyObject *fromlist, int level)
Import a module. This is best described by referring to the built-in Python
function :func:`__import__`, as the standard :func:`__import__` function calls
@@ -68,6 +68,13 @@ Importing Modules
the return value when a submodule of a package was requested is normally the
top-level package, unless a non-empty *fromlist* was given.
+ .. versionadded:: 3.3
+
+
+.. c:function:: PyObject* PyImport_ImportModuleLevel(char *name, PyObject *globals, PyObject *locals, PyObject *fromlist, int level)
+
+ Similar to :c:func:`PyImport_ImportModuleLevelObject`, but the name is an
+ UTF-8 encoded string instead of a Unicode object.
.. c:function:: PyObject* PyImport_Import(PyObject *name)
@@ -86,7 +93,7 @@ Importing Modules
an exception set on failure (the module still exists in this case).
-.. c:function:: PyObject* PyImport_AddModule(const char *name)
+.. c:function:: PyObject* PyImport_AddModuleObject(PyObject *name)
Return the module object corresponding to a module name. The *name* argument
may be of the form ``package.module``. First check the modules dictionary if
@@ -100,6 +107,14 @@ Importing Modules
or one of its variants to import a module. Package structures implied by a
dotted name for *name* are not created if not already present.
+ .. versionadded:: 3.3
+
+
+.. c:function:: PyObject* PyImport_AddModule(const char *name)
+
+ Similar to :c:func:`PyImport_AddModuleObject`, but the name is a UTF-8
+ encoded string instead of a Unicode object.
+
.. c:function:: PyObject* PyImport_ExecCodeModule(char *name, PyObject *co)
@@ -136,25 +151,43 @@ Importing Modules
See also :c:func:`PyImport_ExecCodeModuleWithPathnames`.
-.. c:function:: PyObject* PyImport_ExecCodeModuleWithPathnames(char *name, PyObject *co, char *pathname, char *cpathname)
+.. c:function:: PyObject* PyImport_ExecCodeModuleObject(PyObject *name, PyObject *co, PyObject *pathname, PyObject *cpathname)
Like :c:func:`PyImport_ExecCodeModuleEx`, but the :attr:`__cached__`
attribute of the module object is set to *cpathname* if it is
non-``NULL``. Of the three functions, this is the preferred one to use.
+ .. versionadded:: 3.3
+
+
+.. c:function:: PyObject* PyImport_ExecCodeModuleWithPathnames(char *name, PyObject *co, char *pathname, char *cpathname)
+
+ Like :c:func:`PyImport_ExecCodeModuleObject`, but *name*, *pathname* and
+ *cpathname* are UTF-8 encoded strings. Attempts are also made to figure out
+ what the value for *pathname* should be from *cpathname* if the former is
+ set to ``NULL``.
+
.. versionadded:: 3.2
+ .. versionchanged:: 3.3
+ Uses :func:`imp.source_from_cache()` in calculating the source path if
+ only the bytecode path is provided.
+
.. c:function:: long PyImport_GetMagicNumber()
Return the magic number for Python bytecode files (a.k.a. :file:`.pyc` and
:file:`.pyo` files). The magic number should be present in the first four bytes
- of the bytecode file, in little-endian byte order.
+ of the bytecode file, in little-endian byte order. Returns -1 on error.
+
+ .. versionchanged:: 3.3
+ Return value of -1 upon failure.
.. c:function:: const char * PyImport_GetMagicTag()
Return the magic tag string for :pep:`3147` format Python bytecode file
- names.
+ names. Keep in mind that the value at ``sys.implementation.cache_tag`` is
+ authoritative and should be used instead of this function.
.. versionadded:: 3.2
@@ -200,7 +233,7 @@ Importing Modules
For internal use only.
-.. c:function:: int PyImport_ImportFrozenModule(char *name)
+.. c:function:: int PyImport_ImportFrozenModuleObject(PyObject *name)
Load a frozen module named *name*. Return ``1`` for success, ``0`` if the
module is not found, and ``-1`` with an exception set if the initialization
@@ -208,6 +241,14 @@ Importing Modules
:c:func:`PyImport_ImportModule`. (Note the misnomer --- this function would
reload the module if it was already imported.)
+ .. versionadded:: 3.3
+
+
+.. c:function:: int PyImport_ImportFrozenModule(char *name)
+
+ Similar to :c:func:`PyImport_ImportFrozenModuleObject`, but the name is a
+ UTF-8 encoded string instead of a Unicode object.
+
.. c:type:: struct _frozen
@@ -247,13 +288,13 @@ Importing Modules
Structure describing a single entry in the list of built-in modules. Each of
these structures gives the name and initialization function for a module built
- into the interpreter. Programs which embed Python may use an array of these
- structures in conjunction with :c:func:`PyImport_ExtendInittab` to provide
- additional built-in modules. The structure is defined in
- :file:`Include/import.h` as::
+ into the interpreter. The name is an ASCII encoded string. Programs which
+ embed Python may use an array of these structures in conjunction with
+ :c:func:`PyImport_ExtendInittab` to provide additional built-in modules.
+ The structure is defined in :file:`Include/import.h` as::
struct _inittab {
- char *name;
+ char *name; /* ASCII encoded string */
PyObject* (*initfunc)(void);
};