Move the interpreters module to the official stdlib.

Author: ericsnowcurrently

.github/CODEOWNERS

@@ -281,7 +281,7 @@ Doc/howto/clinic.rst          @erlend-aasland
 # Subinterpreters
 **/*interpreteridobject.*     @ericsnowcurrently
 **/*crossinterp*              @ericsnowcurrently
-Lib/test/support/interpreters/  @ericsnowcurrently
+Lib/interpreters/             @ericsnowcurrently
 Modules/_interp*module.c      @ericsnowcurrently
 Lib/test/test_interpreters/   @ericsnowcurrently
 

Lib/test/support/interpreters/__init__.py renamed to Lib/interpreters/__init__.py

@@ -9,7 +9,7 @@
 from test.support import import_helper, skip_if_sanitizer
 
 _channels = import_helper.import_module('_interpchannels')
-from test.support.interpreters import _crossinterp
+from interpreters import _crossinterp
 from test.test__interpreters import (
     _interpreters,
     _run_output,

Lib/test/support/interpreters/_crossinterp.py renamed to Lib/interpreters/_crossinterp.py

@@ -8,10 +8,10 @@
 from concurrent.futures.interpreter import (
     ExecutionFailed, BrokenInterpreterPool,
 )
+from interpreters import queues
 import _interpreters
 from test import support
 import test.test_asyncio.utils as testasyncio_utils
-from test.support.interpreters import queues
 
 from .executor import ExecutorTest, mul
 from .util import BaseTestCase, InterpreterPoolMixin, setup_module

Lib/test/support/interpreters/channels.py renamed to Lib/interpreters/channels.py

@@ -13,11 +13,11 @@
 from test.support import import_helper
 # Raise SkipTest if subinterpreters not supported.
 _interpreters = import_helper.import_module('_interpreters')
+import interpreters
 from test.support import Py_GIL_DISABLED
-from test.support import interpreters
 from test.support import force_not_colorized
 import test._crossinterp_definitions as defs
-from test.support.interpreters import (
+from interpreters import (
     InterpreterError, InterpreterNotFoundError, ExecutionFailed,
 )
 from .utils import (
@@ -133,7 +133,7 @@ def test_in_subinterpreter(self):
         main, = interpreters.list_all()
         interp = interpreters.create()
         out = _run_output(interp, dedent("""
-            from test.support import interpreters
+            import interpreters
             interp = interpreters.create()
             print(interp.id)
             """))
@@ -196,7 +196,7 @@ def test_subinterpreter(self):
         main = interpreters.get_main()
         interp = interpreters.create()
         out = _run_output(interp, dedent("""
-            from test.support import interpreters
+            import interpreters
             cur = interpreters.get_current()
             print(cur.id)
             """))
@@ -213,7 +213,7 @@ def test_idempotent(self):
         with self.subTest('subinterpreter'):
             interp = interpreters.create()
             out = _run_output(interp, dedent("""
-                from test.support import interpreters
+                import interpreters
                 cur = interpreters.get_current()
                 print(id(cur))
                 cur = interpreters.get_current()
@@ -225,7 +225,7 @@ def test_idempotent(self):
         with self.subTest('per-interpreter'):
             interp = interpreters.create()
             out = _run_output(interp, dedent("""
-                from test.support import interpreters
+                import interpreters
                 cur = interpreters.get_current()
                 print(id(cur))
                 """))
@@ -582,7 +582,7 @@ def test_from_current(self):
         main, = interpreters.list_all()
         interp = interpreters.create()
         out = _run_output(interp, dedent(f"""
-            from test.support import interpreters
+            import interpreters
             interp = interpreters.Interpreter({interp.id})
             try:
                 interp.close()
@@ -599,7 +599,7 @@ def test_from_sibling(self):
         self.assertEqual(set(interpreters.list_all()),
                          {main, interp1, interp2})
         interp1.exec(dedent(f"""
-            from test.support import interpreters
+            import interpreters
             interp2 = interpreters.Interpreter({interp2.id})
             interp2.close()
             interp3 = interpreters.create()
@@ -806,7 +806,7 @@ def eggs():
                 ham()
             """)
         scriptfile = self.make_script('script.py', tempdir, text="""
-            from test.support import interpreters
+            import interpreters
 
             def script():
                 import spam
@@ -827,7 +827,7 @@ def script():
                 ~~~~~~~~~~~^^^^^^^^
               {interpmod_line.strip()}
                 raise ExecutionFailed(excinfo)
-            test.support.interpreters.ExecutionFailed: RuntimeError: uh-oh!
+            interpreters.ExecutionFailed: RuntimeError: uh-oh!
 
             Uncaught in the interpreter:
 
@@ -1281,7 +1281,7 @@ def run(text):
             # no module indirection
             with self.subTest('no indirection'):
                 text = run(f"""
-                    from test.support import interpreters
+                    import interpreters
 
                     def spam():
                         # This a global var...
@@ -1301,7 +1301,7 @@ def run(interp, func):
                 """)
             with self.subTest('indirect as func, direct interp'):
                 text = run(f"""
-                    from test.support import interpreters
+                    import interpreters
                     import mymod
 
                     def spam():
@@ -1317,7 +1317,7 @@ def spam():
 
             # indirect as func, indirect interp
             new_mod('mymod', f"""
-                from test.support import interpreters
+                import interpreters
                 def run(func):
                     interp = interpreters.create()
                     return interp.call(func)

Lib/test/support/interpreters/queues.py renamed to Lib/interpreters/queues.py

@@ -8,8 +8,8 @@
 from test.support import import_helper
 # Raise SkipTest if subinterpreters not supported.
 _channels = import_helper.import_module('_interpchannels')
-from test.support import interpreters
-from test.support.interpreters import channels
+import interpreters
+from interpreters import channels
 from .utils import _run_output, TestBase
 
 
@@ -171,7 +171,7 @@ def test_send_recv_main(self):
     def test_send_recv_same_interpreter(self):
         interp = interpreters.create()
         interp.exec(dedent("""
-            from test.support.interpreters import channels
+            from interpreters import channels
             r, s = channels.create()
             orig = b'spam'
             s.send_nowait(orig)
@@ -244,7 +244,7 @@ def test_send_recv_nowait_main_with_default(self):
     def test_send_recv_nowait_same_interpreter(self):
         interp = interpreters.create()
         interp.exec(dedent("""
-            from test.support.interpreters import channels
+            from interpreters import channels
             r, s = channels.create()
             orig = b'spam'
             s.send_nowait(orig)
@@ -387,7 +387,7 @@ def common(rch, sch, unbound=None, presize=0):
             interp = interpreters.create()
 
             _run_output(interp, dedent(f"""
-                from test.support.interpreters import channels
+                from interpreters import channels
                 sch = channels.SendChannel({sch.id})
                 obj1 = b'spam'
                 obj2 = b'eggs'
@@ -482,7 +482,7 @@ def test_send_cleared_with_subinterpreter_mixed(self):
         self.assertEqual(_channels.get_count(rch.id), 0)
 
         _run_output(interp, dedent(f"""
-            from test.support.interpreters import channels
+            from interpreters import channels
             sch = channels.SendChannel({sch.id})
             sch.send_nowait(1, unbounditems=channels.UNBOUND)
             sch.send_nowait(2, unbounditems=channels.UNBOUND_ERROR)
@@ -518,15 +518,15 @@ def test_send_cleared_with_subinterpreter_multiple(self):
 
         sch.send_nowait(1)
         _run_output(interp1, dedent(f"""
-            from test.support.interpreters import channels
+            from interpreters import channels
             rch = channels.RecvChannel({rch.id})
             sch = channels.SendChannel({sch.id})
             obj1 = rch.recv()
             sch.send_nowait(2, unbounditems=channels.UNBOUND)
             sch.send_nowait(obj1, unbounditems=channels.UNBOUND_REMOVE)
             """))
         _run_output(interp2, dedent(f"""
-            from test.support.interpreters import channels
+            from interpreters import channels
             rch = channels.RecvChannel({rch.id})
             sch = channels.SendChannel({sch.id})
             obj2 = rch.recv()

Lib/test/test__interpchannels.py

@@ -119,7 +119,7 @@ def test_sys_path_0(self):
         # The main interpreter's sys.path[0] should be used by subinterpreters.
         script = '''
             import sys
-            from test.support import interpreters
+            import interpreters
 
             orig = sys.path[0]
 
@@ -170,7 +170,7 @@ def test_gh_109793(self):
         # is reported, even when subinterpreters get cleaned up at the end.
         import subprocess
         argv = [sys.executable, '-c', '''if True:
-            from test.support import interpreters
+            import interpreters
             interp = interpreters.create()
             raise Exception
             ''']

Lib/test/test_concurrent_futures/test_interpreter_pool.py

@@ -7,8 +7,8 @@
 from test.support import import_helper, Py_DEBUG
 # Raise SkipTest if subinterpreters not supported.
 _queues = import_helper.import_module('_interpqueues')
-from test.support import interpreters
-from test.support.interpreters import queues, _crossinterp
+import interpreters
+from interpreters import queues, _crossinterp
 from .utils import _run_output, TestBase as _TestBase
 
 
@@ -126,7 +126,7 @@ def test_shareable(self):
 
         interp = interpreters.create()
         interp.exec(dedent(f"""
-            from test.support.interpreters import queues
+            from interpreters import queues
             queue1 = queues.Queue({queue1.id})
             """));
 
@@ -324,7 +324,7 @@ def test_put_get_full_fallback(self):
     def test_put_get_same_interpreter(self):
         interp = interpreters.create()
         interp.exec(dedent("""
-            from test.support.interpreters import queues
+            from interpreters import queues
             queue = queues.create()
             """))
         for methname in ('get', 'get_nowait'):
@@ -351,7 +351,7 @@ def test_put_get_different_interpreters(self):
                 out = _run_output(
                     interp,
                     dedent(f"""
-                        from test.support.interpreters import queues
+                        from interpreters import queues
                         queue1 = queues.Queue({queue1.id})
                         queue2 = queues.Queue({queue2.id})
                         assert queue1.qsize() == 1, 'expected: queue1.qsize() == 1'
@@ -390,7 +390,7 @@ def common(queue, unbound=None, presize=0):
             interp = interpreters.create()
 
             _run_output(interp, dedent(f"""
-                from test.support.interpreters import queues
+                from interpreters import queues
                 queue = queues.Queue({queue.id})
                 obj1 = b'spam'
                 obj2 = b'eggs'
@@ -468,7 +468,7 @@ def test_put_cleared_with_subinterpreter_mixed(self):
         queue = queues.create()
         interp = interpreters.create()
         _run_output(interp, dedent(f"""
-            from test.support.interpreters import queues
+            from interpreters import queues
             queue = queues.Queue({queue.id})
             queue.put(1, unbounditems=queues.UNBOUND)
             queue.put(2, unbounditems=queues.UNBOUND_ERROR)
@@ -504,14 +504,14 @@ def test_put_cleared_with_subinterpreter_multiple(self):
 
         queue.put(1)
         _run_output(interp1, dedent(f"""
-            from test.support.interpreters import queues
+            from interpreters import queues
             queue = queues.Queue({queue.id})
             obj1 = queue.get()
             queue.put(2, unbounditems=queues.UNBOUND)
             queue.put(obj1, unbounditems=queues.UNBOUND_REMOVE)
             """))
         _run_output(interp2, dedent(f"""
-            from test.support.interpreters import queues
+            from interpreters import queues
             queue = queues.Queue({queue.id})
             obj2 = queue.get()
             obj1 = queue.get()

Lib/test/test_interpreters/test_api.py

@@ -6,7 +6,7 @@
 from test.support import threading_helper
 # Raise SkipTest if subinterpreters not supported.
 import_helper.import_module('_interpreters')
-from test.support import interpreters
+import interpreters
 from .utils import TestBase
 
 

Lib/test/test_interpreters/test_channels.py

@@ -21,7 +21,7 @@
     import _interpreters
 except ImportError as exc:
     raise unittest.SkipTest(str(exc))
-from test.support import interpreters
+import interpreters
 
 
 try:

Lib/test/test_interpreters/test_lifecycle.py

@@ -24,7 +24,7 @@
 from test.support import force_not_colorized
 from test.support import SHORT_TIMEOUT
 try:
-    from test.support import interpreters
+    import interpreters
 except ImportError:
     interpreters = None
 import textwrap

Lib/test/test_interpreters/test_queues.py

@@ -28,7 +28,7 @@
 from test import support
 
 try:
-    from test.support import interpreters
+    import interpreters
 except ImportError:
     interpreters = None
 

Lib/test/test_interpreters/test_stress.py

@@ -2513,10 +2513,10 @@ class SubinterpreterTests(unittest.TestCase):
     def setUpClass(cls):
         global interpreters
         try:
-            from test.support import interpreters
+            import interpreters
         except ModuleNotFoundError:
             raise unittest.SkipTest('subinterpreters required')
-        import test.support.interpreters.channels  # noqa: F401
+        import interpreters.channels  # noqa: F401
 
     @cpython_only
     @no_rerun('channels (and queues) might have a refleak; see gh-122199')
@@ -2547,7 +2547,7 @@ def collate_results(raw):
         main_results = collate_results(raw)
 
         interp = interpreters.create()
-        interp.exec('from test.support import interpreters')
+        interp.exec('import interpreters')
         interp.prepare_main(sch=sch)
         interp.exec(script)
         raw = rch.recv_nowait()

Lib/test/test_interpreters/utils.py

@@ -2526,6 +2526,7 @@ LIBSUBDIRS=	asyncio \
 		http \
 		idlelib idlelib/Icons \
 		importlib importlib/resources importlib/metadata \
+		interpreters \
 		json \
 		logging \
 		multiprocessing multiprocessing/dummy \
@@ -2573,7 +2574,6 @@ TESTSUBDIRS=	idlelib/idle_test \
 		test/subprocessdata \
 		test/support \
 		test/support/_hypothesis_stubs \
-		test/support/interpreters \
 		test/test_asyncio \
 		test/test_capi \
 		test/test_cext \

Lib/test/test_sys.py

@@ -2744,11 +2744,7 @@ _get_current_channelend_type(int end)
         // Force the module to be loaded, to register the type.
         PyObject *highlevel = PyImport_ImportModule("interpreters.channels");
         if (highlevel == NULL) {
-            PyErr_Clear();
-            highlevel = PyImport_ImportModule("test.support.interpreters.channels");
-            if (highlevel == NULL) {
-                return NULL;
-            }
+            return NULL;
         }
         Py_DECREF(highlevel);
         if (end == CHANNEL_SEND) {