Revert "[3.13] pythongh-128231: Use runcode() return value for failing early (pythonGH-129488) (python#130513)"

This reverts commit 8f6a9aa.

Author: hugovk

Lib/_pyrepl/console.py

@@ -153,8 +153,6 @@ def repaint(self) -> None: ...
 
 
 class InteractiveColoredConsole(code.InteractiveConsole):
-    STATEMENT_FAILED = object()
-
     def __init__(
         self,
         locals: dict[str, object] | None = None,
@@ -176,16 +174,6 @@ def _excepthook(self, typ, value, tb):
                 limit=traceback.BUILTIN_EXCEPTION_LIMIT)
         self.write(''.join(lines))
 
-    def runcode(self, code):
-        try:
-            exec(code, self.locals)
-        except SystemExit:
-            raise
-        except BaseException:
-            self.showtraceback()
-            return self.STATEMENT_FAILED
-        return None
-
     def runsource(self, source, filename="<input>", symbol="single"):
         try:
             tree = self.compile.compiler(
@@ -223,7 +211,5 @@ def runsource(self, source, filename="<input>", symbol="single"):
             if code is None:
                 return True
 
-            result = self.runcode(code)
-            if result is self.STATEMENT_FAILED:
-                break
+            self.runcode(code)
         return False

Lib/asyncio/__main__.py

@@ -75,7 +75,7 @@ def callback():
                 self.write("\nKeyboardInterrupt\n")
             else:
                 self.showtraceback()
-            return self.STATEMENT_FAILED
+
 
 class REPLThread(threading.Thread):
 

Lib/test/test_pyrepl/test_interact.py

@@ -53,19 +53,6 @@ def test_multiple_statements_output(self):
         self.assertFalse(more)
         self.assertEqual(f.getvalue(), "1\n")
 
-    @force_not_colorized
-    def test_multiple_statements_fail_early(self):
-        console = InteractiveColoredConsole()
-        code = dedent("""\
-        raise Exception('foobar')
-        print('spam&eggs')
-        """)
-        f = io.StringIO()
-        with contextlib.redirect_stderr(f):
-            console.runsource(code)
-        self.assertIn('Exception: foobar', f.getvalue())
-        self.assertNotIn('spam&eggs', f.getvalue())
-
     def test_empty(self):
         namespace = {}
         code = ""

Lib/test/test_repl.py

@@ -294,15 +294,7 @@ def f():
         self.assertEqual(traceback_lines, expected_lines)
 
 
-class TestAsyncioREPL(unittest.TestCase):
-    def test_multiple_statements_fail_early(self):
-        user_input = "1 / 0; print('afterwards')"
-        p = spawn_repl("-m", "asyncio")
-        p.stdin.write(user_input)
-        output = kill_python(p)
-        self.assertIn("ZeroDivisionError", output)
-        self.assertNotIn("afterwards", output)
-
+class TestAsyncioREPLContextVars(unittest.TestCase):
     def test_toplevel_contextvars_sync(self):
         user_input = dedent("""\
         from contextvars import ContextVar