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Use FASTCALL for __import__ (GH-31752)

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Kumar Aditya 2022-03-11 22:16:55 +05:30 • committed by GitHub
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commit 6f3b9e2243
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2 changed files with 111 additions and 29 deletions
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59
Python/bltinmodule.c
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@ -243,38 +243,41 @@ PyDoc_STRVAR(build_class_doc,
\n\
Internal helper function used by the class statement.");
static PyObject *
builtin___import__(PyObject *self, PyObject *args, PyObject *kwds)
{
static char *kwlist[] = {"name", "globals", "locals", "fromlist",
"level", 0};
PyObject *name, *globals = NULL, *locals = NULL, *fromlist = NULL;
int level = 0;
/*[clinic input]
__import__ as builtin___import__
if (!PyArg_ParseTupleAndKeywords(args, kwds, "U|OOOi:__import__",
kwlist, &name, &globals, &locals, &fromlist, &level))
return NULL;
name: object
globals: object(c_default="NULL") = None
locals: object(c_default="NULL") = None
fromlist: object(c_default="NULL") = ()
level: int = 0
Import a module.
Because this function is meant for use by the Python
interpreter and not for general use, it is better to use
importlib.import_module() to programmatically import a module.
The globals argument is only used to determine the context;
they are not modified. The locals argument is unused. The fromlist
should be a list of names to emulate ``from name import ...'', or an
empty list to emulate ``import name''.
When importing a module from a package, note that __import__('A.B', ...)
returns package A when fromlist is empty, but its submodule B when
fromlist is not empty. The level argument is used to determine whether to
perform absolute or relative imports: 0 is absolute, while a positive number
is the number of parent directories to search relative to the current module.
[clinic start generated code]*/
static PyObject *
builtin___import___impl(PyObject *module, PyObject *name, PyObject *globals,
PyObject *locals, PyObject *fromlist, int level)
/*[clinic end generated code: output=4febeda88a0cd245 input=35e9a6460412430f]*/
{
return PyImport_ImportModuleLevelObject(name, globals, locals,
fromlist, level);
}
PyDoc_STRVAR(import_doc,
"__import__(name, globals=None, locals=None, fromlist=(), level=0) -> module\n\
\n\
Import a module. Because this function is meant for use by the Python\n\
interpreter and not for general use, it is better to use\n\
importlib.import_module() to programmatically import a module.\n\
\n\
The globals argument is only used to determine the context;\n\
they are not modified. The locals argument is unused. The fromlist\n\
should be a list of names to emulate ``from name import ...'', or an\n\
empty list to emulate ``import name''.\n\
When importing a module from a package, note that __import__('A.B', ...)\n\
returns package A when fromlist is empty, but its submodule B when\n\
fromlist is not empty. The level argument is used to determine whether to\n\
perform absolute or relative imports: 0 is absolute, while a positive number\n\
is the number of parent directories to search relative to the current module.");
/*[clinic input]
abs as builtin_abs
@ -2903,7 +2906,7 @@ PyTypeObject PyZip_Type = {
static PyMethodDef builtin_methods[] = {
{"__build_class__", (PyCFunction)(void(*)(void))builtin___build_class__,
METH_FASTCALL | METH_KEYWORDS, build_class_doc},
{"__import__", (PyCFunction)(void(*)(void))builtin___import__, METH_VARARGS | METH_KEYWORDS, import_doc},
BUILTIN___IMPORT___METHODDEF
BUILTIN_ABS_METHODDEF
BUILTIN_ALL_METHODDEF
BUILTIN_ANY_METHODDEF