cpython/Doc/c-api/code.rst
Miss Islington (bot) faf4957396
bpo-42528: Improve the docs of most Py*_Check{,Exact} API calls (GH-23602) (GH-24139)
I think that none of these API calls can fail, but only few of them are
documented as such. Add the sentence "This function always succeeds" (which is
the same already used e.g. by PyNumber_Check) to all of them.
(cherry picked from commit 315fc52db1)

Co-authored-by: Antonio Cuni <anto.cuni@gmail.com>

Co-authored-by: Antonio Cuni <anto.cuni@gmail.com>
2021-01-06 13:54:18 +01:00

53 lines
2.1 KiB
ReStructuredText

.. highlight:: c
.. _codeobjects:
.. index:: object; code, code object
Code Objects
------------
.. sectionauthor:: Jeffrey Yasskin <jyasskin@gmail.com>
Code objects are a low-level detail of the CPython implementation.
Each one represents a chunk of executable code that hasn't yet been
bound into a function.
.. c:type:: PyCodeObject
The C structure of the objects used to describe code objects. The
fields of this type are subject to change at any time.
.. c:var:: PyTypeObject PyCode_Type
This is an instance of :c:type:`PyTypeObject` representing the Python
:class:`code` type.
.. c:function:: int PyCode_Check(PyObject *co)
Return true if *co* is a :class:`code` object. This function always succeeds.
.. c:function:: int PyCode_GetNumFree(PyCodeObject *co)
Return the number of free variables in *co*.
.. c:function:: PyCodeObject* PyCode_New(int argcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, int firstlineno, PyObject *lnotab)
Return a new code object. If you need a dummy code object to create a frame,
use :c:func:`PyCode_NewEmpty` instead. Calling :c:func:`PyCode_New` directly
can bind you to a precise Python version since the definition of the bytecode
changes often.
.. c:function:: PyCodeObject* PyCode_NewWithPosOnlyArgs(int argcount, int posonlyargcount, int kwonlyargcount, int nlocals, int stacksize, int flags, PyObject *code, PyObject *consts, PyObject *names, PyObject *varnames, PyObject *freevars, PyObject *cellvars, PyObject *filename, PyObject *name, int firstlineno, PyObject *lnotab)
Similar to :c:func:`PyCode_New`, but with an extra "posonlyargcount" for positional-only arguments.
.. versionadded:: 3.8
.. c:function:: PyCodeObject* PyCode_NewEmpty(const char *filename, const char *funcname, int firstlineno)
Return a new empty code object with the specified filename,
function name, and first line number. It is illegal to
:func:`exec` or :func:`eval` the resulting code object.