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bpo-44603: Exit the interpreter if the user types "exit" #27096

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bpo-44603: Exit the interpreter if the user types "exit" #27096

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8 changes: 8 additions & 0 deletions Doc/whatsnew/3.11.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -98,6 +98,14 @@ New Modules
Improved Modules
================

builtins
--------

* In the interactive REPL, typing "exit" or "quit" will directly exit the
interpreter session instead of printing a message suggesting to use "exit()" or
"quit()" instead. Contributed by Pablo Galindo in :issue:`44603`.


fractions
---------

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3 changes: 3 additions & 0 deletions Misc/NEWS.d/next/Core and Builtins/2021-07-12-17-26-39.bpo-44603.wAxvpc.rst
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@@ -0,0 +1,3 @@
In the interactive REPL, typing "exit" or "quit" will directly exit the
interpreter session instead of printing a message suggesting to use "exit()"
or "quit()" instead. Patch by Pablo Galindo
27 changes: 27 additions & 0 deletions Python/pythonrun.c
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Expand Up @@ -188,6 +188,25 @@ PyRun_InteractiveLoopFlags(FILE *fp, const char *filename, PyCompilerFlags *flag

}

static int
PyRun_IsInteractiveExitCommand(mod_ty mod) {
if (asdl_seq_LEN(mod->v.Module.body) != 1) {
return 0;
}
stmt_ty statement = asdl_seq_GET(mod->v.Module.body, 0);
if (statement->kind != Expr_kind) {
return 0;
}
expr_ty expr = statement->v.Expr.value;
if (expr->kind != Name_kind) {
return 0;
}
if (expr->v.Name.ctx != Load) {
return 0;
}
return PyUnicode_CompareWithASCIIString(expr->v.Name.id, "exit") == 0 ||
PyUnicode_CompareWithASCIIString(expr->v.Name.id, "quit") == 0;
}
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Tests of the object associated with the names is needed to not turn them into semi-keywords, as in the the following.

>>> exit = 3
>>> exit

f:\dev\3x>


/* A PyRun_InteractiveOneObject() auxiliary function that does not print the
* error on failure. */
Expand Down Expand Up @@ -267,6 +286,14 @@ PyRun_InteractiveOneObjectEx(FILE *fp, PyObject *filename,
}
return -1;
}

if (PyRun_IsInteractiveExitCommand(mod)) {
Py_INCREF(Py_None);
PyErr_SetObject(PyExc_SystemExit, Py_None);
_PyArena_Free(arena);
return -1;
}

m = PyImport_AddModuleObject(mod_name);
if (m == NULL) {
_PyArena_Free(arena);
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