Issue #25791: Warn when __package__ != __spec__.parent.

In a previous change, __spec__.parent was prioritized over
__package__. That is a backwards-compatibility break, but we do
eventually want __spec__ to be the ground truth for module details. So
this change reverts the change in semantics and instead raises an
ImportWarning when __package__ != __spec__.parent to give people time
to adjust to using spec objects.

8 files changed, 183 insertions, 120 deletions

diff --git a/Doc/reference/import.rst b/Doc/reference/import.rst
index a162851..56049ce 100644
--- a/Doc/reference/import.rst
+++ b/Doc/reference/import.rst
@@ -554,20 +554,30 @@ the module.
    details.
 
    This attribute is used instead of ``__name__`` to calculate explicit
-   relative imports for main modules -- as defined in :pep:`366` --
-   when ``__spec__`` is not defined.
+   relative imports for main modules, as defined in :pep:`366`. It is
+   expected to have the same value as ``__spec__.parent``.
+
+   .. versionchanged:: 3.6
+      The value of ``__package__`` is expected to be the same as
+      ``__spec__.parent``.
 
 .. attribute:: __spec__
 
    The ``__spec__`` attribute must be set to the module spec that was
-   used when importing the module.  This is used primarily for
-   introspection and during reloading.  Setting ``__spec__``
+   used when importing the module. Setting ``__spec__``
    appropriately applies equally to :ref:`modules initialized during
    interpreter startup <programs>`.  The one exception is ``__main__``,
    where ``__spec__`` is :ref:`set to None in some cases <main_spec>`.
 
+   When ``__package__`` is not defined, ``__spec__.parent`` is used as
+   a fallback.
+
    .. versionadded:: 3.4
 
+   .. versionchanged:: 3.6
+      ``__spec__.parent`` is used as a fallback when ``__package__`` is
+      not defined.
+
 .. attribute:: __path__
 
    If the module is a package (either regular or namespace), the module
diff --git a/Doc/whatsnew/3.6.rst b/Doc/whatsnew/3.6.rst
index 8064537..5872cc0 100644
--- a/Doc/whatsnew/3.6.rst
+++ b/Doc/whatsnew/3.6.rst
@@ -274,9 +274,9 @@ Changes in the Python API
   :mod:`wave`.  This means they will export new symbols when ``import *``
   is used.  See :issue:`23883`.
 
-* When performing a relative import, ``__spec__.parent`` is used
-  is ``__spec__`` is defined instead of ``__package__``.
-  (Contributed by Rose Ames in :issue:`25791`.)
+* When performing a relative import, if ``__package__`` does not compare equal
+  to ``__spec__.parent`` then :exc:`ImportWarning` is raised.
+  (Contributed by Brett Cannon in :issue:`25791`.)
 
 
 Changes in the C API
diff --git a/Lib/importlib/_bootstrap.py b/Lib/importlib/_bootstrap.py
index 9adcf7b..f0a4e1c 100644
--- a/Lib/importlib/_bootstrap.py
+++ b/Lib/importlib/_bootstrap.py
@@ -1032,11 +1032,17 @@ def _calc___package__(globals):
     to represent that its proper value is unknown.
 
     """
+    package = globals.get('__package__')
     spec = globals.get('__spec__')
-    if spec is not None:
+    if package is not None:
+        if spec is not None and package != spec.parent:
+            _warnings.warn("__package__ != __spec__.parent "
+                           f"({package!r} != {spec.parent!r})",
+                           ImportWarning, stacklevel=3)
+        return package
+    elif spec is not None:
         return spec.parent
-    package = globals.get('__package__')
-    if package is None:
+    else:
         _warnings.warn("can't resolve package from __spec__ or __package__, "
                        "falling back on __name__ and __path__",
                        ImportWarning, stacklevel=3)
diff --git a/Lib/test/test_importlib/import_/test___package__.py b/Lib/test/test_importlib/import_/test___package__.py
index 08e41c9..ddeeaca 100644
--- a/Lib/test/test_importlib/import_/test___package__.py
+++ b/Lib/test/test_importlib/import_/test___package__.py
@@ -5,6 +5,7 @@ of using the typical __path__/__name__ test).
 
 """
 import unittest
+import warnings
 from .. import util
 
 
@@ -38,8 +39,8 @@ class Using__package__:
             with util.import_state(meta_path=[importer]):
                 self.__import__('pkg.fake')
                 module = self.__import__('',
-                                            globals=globals_,
-                                            fromlist=['attr'], level=2)
+                                         globals=globals_,
+                                         fromlist=['attr'], level=2)
         return module
 
     def test_using___package__(self):
@@ -49,7 +50,10 @@ class Using__package__:
 
     def test_using___name__(self):
         # [__name__]
-        module = self.import_module({'__name__': 'pkg.fake', '__path__': []})
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
+            module = self.import_module({'__name__': 'pkg.fake',
+                                         '__path__': []})
         self.assertEqual(module.__name__, 'pkg')
 
     def test_warn_when_using___name__(self):
@@ -58,14 +62,22 @@ class Using__package__:
 
     def test_None_as___package__(self):
         # [None]
-        module = self.import_module({
-            '__name__': 'pkg.fake', '__path__': [], '__package__': None })
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
+            module = self.import_module({
+                '__name__': 'pkg.fake', '__path__': [], '__package__': None })
         self.assertEqual(module.__name__, 'pkg')
 
-    def test_prefers___spec__(self):
-        globals = {'__spec__': FakeSpec()}
-        with self.assertRaises(SystemError):
-            self.__import__('', globals, {}, ['relimport'], 1)
+    def test_spec_fallback(self):
+        # If __package__ isn't defined, fall back on __spec__.parent.
+        module = self.import_module({'__spec__': FakeSpec('pkg.fake')})
+        self.assertEqual(module.__name__, 'pkg')
+
+    def test_warn_when_package_and_spec_disagree(self):
+        # Raise an ImportWarning if __package__ != __spec__.parent.
+        with self.assertWarns(ImportWarning):
+                self.import_module({'__package__': 'pkg.fake',
+                                    '__spec__': FakeSpec('pkg.fakefake')})
 
     def test_bad__package__(self):
         globals = {'__package__': '<not real>'}
@@ -79,7 +91,8 @@ class Using__package__:
 
 
 class FakeSpec:
-    parent = '<fake>'
+    def __init__(self, parent):
+        self.parent = parent
 
 
 class Using__package__PEP302(Using__package__):
diff --git a/Lib/test/test_importlib/import_/test_relative_imports.py b/Lib/test/test_importlib/import_/test_relative_imports.py
index 28bb6f7..0409f22 100644
--- a/Lib/test/test_importlib/import_/test_relative_imports.py
+++ b/Lib/test/test_importlib/import_/test_relative_imports.py
@@ -2,6 +2,8 @@
 from .. import util
 import sys
 import unittest
+import warnings
+
 
 class RelativeImports:
 
@@ -65,9 +67,11 @@ class RelativeImports:
                 uncache_names.append(name[:-len('.__init__')])
         with util.mock_spec(*create) as importer:
             with util.import_state(meta_path=[importer]):
-                for global_ in globals_:
-                    with util.uncache(*uncache_names):
-                        callback(global_)
+                with warnings.catch_warnings():
+                    warnings.simplefilter("ignore")
+                    for global_ in globals_:
+                        with util.uncache(*uncache_names):
+                            callback(global_)
 
 
     def test_module_from_module(self):
@@ -204,8 +208,10 @@ class RelativeImports:
 
     def test_relative_import_no_globals(self):
         # No globals for a relative import is an error.
-        with self.assertRaises(KeyError):
-            self.__import__('sys', level=1)
+        with warnings.catch_warnings():
+            warnings.simplefilter("ignore")
+            with self.assertRaises(KeyError):
+                self.__import__('sys', level=1)
 
 
 (Frozen_RelativeImports,
diff --git a/Misc/NEWS b/Misc/NEWS
index 409feae..165b428 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -26,8 +26,8 @@ Core and Builtins
   Python 3.5.1 to hide the exact implementation of atomic C types, to avoid
   compiler issues.
 
-- Issue #25791: Trying to resolve a relative import without __spec__ or
-  __package__ defined now raises an ImportWarning
+- Issue #25791: If __package__ != __spec__.parent or if neither __package__ or
+  __spec__ are defined then ImportWarning is raised.
 
 - Issue #25731: Fix set and deleting __new__ on a class.
 
diff --git a/Python/import.c b/Python/import.c
index c1071c0..22f9d21 100644
--- a/Python/import.c
+++ b/Python/import.c
@@ -1415,60 +1415,79 @@ PyImport_ImportModuleLevelObject(PyObject *name, PyObject *given_globals,
         goto error;
     }
     else if (level > 0) {
+        package = _PyDict_GetItemId(globals, &PyId___package__);
         spec = _PyDict_GetItemId(globals, &PyId___spec__);
-        if (spec != NULL) {
-            package = PyObject_GetAttrString(spec, "parent");
-        }
+
         if (package != NULL && package != Py_None) {
+            Py_INCREF(package);
             if (!PyUnicode_Check(package)) {
+                PyErr_SetString(PyExc_TypeError, "package must be a string");
+                goto error;
+            }
+            else if (spec != NULL) {
+                int equal;
+                PyObject *parent = PyObject_GetAttrString(spec, "parent");
+                if (parent == NULL) {
+                    goto error;
+                }
+
+                equal = PyObject_RichCompareBool(package, parent, Py_EQ);
+                Py_DECREF(parent);
+                if (equal < 0) {
+                    goto error;
+                }
+                else if (equal == 0) {
+                    if (PyErr_WarnEx(PyExc_ImportWarning,
+                            "__package__ != __spec__.parent", 1) < 0) {
+                        goto error;
+                    }
+                }
+            }
+        }
+        else if (spec != NULL) {
+            package = PyObject_GetAttrString(spec, "parent");
+            if (package == NULL) {
+                goto error;
+            }
+            else if (!PyUnicode_Check(package)) {
                 PyErr_SetString(PyExc_TypeError,
                         "__spec__.parent must be a string");
                 goto error;
             }
         }
         else {
-            package = _PyDict_GetItemId(globals, &PyId___package__);
-            if (package != NULL && package != Py_None) {
-                Py_INCREF(package);
-                if (!PyUnicode_Check(package)) {
-                    PyErr_SetString(PyExc_TypeError, "package must be a string");
-                    goto error;
-                }
+            if (PyErr_WarnEx(PyExc_ImportWarning,
+                        "can't resolve package from __spec__ or __package__, "
+                        "falling back on __name__ and __path__", 1) < 0) {
+                goto error;
             }
-            else {
-                if (PyErr_WarnEx(PyExc_ImportWarning,
-                            "can't resolve package from __spec__ or __package__, "
-                            "falling back on __name__ and __path__", 1) < 0) {
-                    goto error;
-                }
 
-                package = _PyDict_GetItemId(globals, &PyId___name__);
-                if (package == NULL) {
-                    PyErr_SetString(PyExc_KeyError, "'__name__' not in globals");
-                    goto error;
-                }
+            package = _PyDict_GetItemId(globals, &PyId___name__);
+            if (package == NULL) {
+                PyErr_SetString(PyExc_KeyError, "'__name__' not in globals");
+                goto error;
+            }
 
-                Py_INCREF(package);
-                if (!PyUnicode_Check(package)) {
-                    PyErr_SetString(PyExc_TypeError, "__name__ must be a string");
+            Py_INCREF(package);
+            if (!PyUnicode_Check(package)) {
+                PyErr_SetString(PyExc_TypeError, "__name__ must be a string");
+                goto error;
+            }
+
+            if (_PyDict_GetItemId(globals, &PyId___path__) == NULL) {
+                PyObject *partition = NULL;
+                PyObject *borrowed_dot = _PyUnicode_FromId(&single_dot);
+                if (borrowed_dot == NULL) {
                     goto error;
                 }
-
-                if (_PyDict_GetItemId(globals, &PyId___path__) == NULL) {
-                    PyObject *partition = NULL;
-                    PyObject *borrowed_dot = _PyUnicode_FromId(&single_dot);
-                    if (borrowed_dot == NULL) {
-                        goto error;
-                    }
-                    partition = PyUnicode_RPartition(package, borrowed_dot);
-                    Py_DECREF(package);
-                    if (partition == NULL) {
-                        goto error;
-                    }
-                    package = PyTuple_GET_ITEM(partition, 0);
-                    Py_INCREF(package);
-                    Py_DECREF(partition);
+                partition = PyUnicode_RPartition(package, borrowed_dot);
+                Py_DECREF(package);
+                if (partition == NULL) {
+                    goto error;
                 }
+                package = PyTuple_GET_ITEM(partition, 0);
+                Py_INCREF(package);
+                Py_DECREF(partition);
             }
         }
 
diff --git a/Python/importlib.h b/Python/importlib.h
index 709c5fd..e4ef835 100644
--- a/Python/importlib.h
+++ b/Python/importlib.h
@@ -1787,43 +1787,52 @@ const unsigned char _Py_M__importlib[] = {
     115,116,228,3,0,0,115,34,0,0,0,0,10,15,1,12,
     1,12,1,13,1,15,1,16,1,13,1,15,1,21,1,3,
     1,17,1,18,4,21,1,15,1,3,1,26,1,114,195,0,
-    0,0,99,1,0,0,0,0,0,0,0,3,0,0,0,5,
-    0,0,0,67,0,0,0,115,128,0,0,0,124,0,0,106,
-    0,0,100,1,0,131,1,0,125,1,0,124,1,0,100,2,
-    0,107,9,0,114,34,0,124,1,0,106,1,0,83,124,0,
-    0,106,0,0,100,3,0,131,1,0,125,2,0,124,2,0,
-    100,2,0,107,8,0,114,124,0,116,2,0,106,3,0,100,
-    4,0,116,4,0,100,5,0,100,6,0,131,2,1,1,124,
-    0,0,100,7,0,25,125,2,0,100,8,0,124,0,0,107,
-    7,0,114,124,0,124,2,0,106,5,0,100,9,0,131,1,
-    0,100,10,0,25,125,2,0,124,2,0,83,41,11,122,167,
-    67,97,108,99,117,108,97,116,101,32,119,104,97,116,32,95,
-    95,112,97,99,107,97,103,101,95,95,32,115,104,111,117,108,
-    100,32,98,101,46,10,10,32,32,32,32,95,95,112,97,99,
-    107,97,103,101,95,95,32,105,115,32,110,111,116,32,103,117,
-    97,114,97,110,116,101,101,100,32,116,111,32,98,101,32,100,
-    101,102,105,110,101,100,32,111,114,32,99,111,117,108,100,32,
-    98,101,32,115,101,116,32,116,111,32,78,111,110,101,10,32,
-    32,32,32,116,111,32,114,101,112,114,101,115,101,110,116,32,
-    116,104,97,116,32,105,116,115,32,112,114,111,112,101,114,32,
-    118,97,108,117,101,32,105,115,32,117,110,107,110,111,119,110,
-    46,10,10,32,32,32,32,114,95,0,0,0,78,114,134,0,
-    0,0,122,89,99,97,110,39,116,32,114,101,115,111,108,118,
-    101,32,112,97,99,107,97,103,101,32,102,114,111,109,32,95,
-    95,115,112,101,99,95,95,32,111,114,32,95,95,112,97,99,
-    107,97,103,101,95,95,44,32,102,97,108,108,105,110,103,32,
-    98,97,99,107,32,111,110,32,95,95,110,97,109,101,95,95,
-    32,97,110,100,32,95,95,112,97,116,104,95,95,114,140,0,
-    0,0,233,3,0,0,0,114,1,0,0,0,114,131,0,0,
-    0,114,121,0,0,0,114,33,0,0,0,41,6,114,42,0,
-    0,0,114,123,0,0,0,114,142,0,0,0,114,143,0,0,
-    0,114,176,0,0,0,114,122,0,0,0,41,3,218,7,103,
-    108,111,98,97,108,115,114,88,0,0,0,114,170,0,0,0,
-    114,10,0,0,0,114,10,0,0,0,114,11,0,0,0,218,
-    17,95,99,97,108,99,95,95,95,112,97,99,107,97,103,101,
-    95,95,4,4,0,0,115,22,0,0,0,0,7,15,1,12,
-    1,7,1,15,1,12,1,9,2,13,1,10,1,12,1,19,
-    1,114,198,0,0,0,99,5,0,0,0,0,0,0,0,9,
+    0,0,99,1,0,0,0,0,0,0,0,3,0,0,0,7,
+    0,0,0,67,0,0,0,115,214,0,0,0,124,0,0,106,
+    0,0,100,1,0,131,1,0,125,1,0,124,0,0,106,0,
+    0,100,2,0,131,1,0,125,2,0,124,1,0,100,3,0,
+    107,9,0,114,128,0,124,2,0,100,3,0,107,9,0,114,
+    124,0,124,1,0,124,2,0,106,1,0,107,3,0,114,124,
+    0,116,2,0,106,3,0,100,4,0,106,4,0,100,5,0,
+    124,1,0,155,2,0,100,6,0,124,2,0,106,1,0,155,
+    2,0,100,7,0,103,5,0,131,1,0,116,5,0,100,8,
+    0,100,9,0,131,2,1,1,124,1,0,83,124,2,0,100,
+    3,0,107,9,0,114,147,0,124,2,0,106,1,0,83,116,
+    2,0,106,3,0,100,10,0,116,5,0,100,8,0,100,9,
+    0,131,2,1,1,124,0,0,100,11,0,25,125,1,0,100,
+    12,0,124,0,0,107,7,0,114,210,0,124,1,0,106,6,
+    0,100,13,0,131,1,0,100,14,0,25,125,1,0,124,1,
+    0,83,41,15,122,167,67,97,108,99,117,108,97,116,101,32,
+    119,104,97,116,32,95,95,112,97,99,107,97,103,101,95,95,
+    32,115,104,111,117,108,100,32,98,101,46,10,10,32,32,32,
+    32,95,95,112,97,99,107,97,103,101,95,95,32,105,115,32,
+    110,111,116,32,103,117,97,114,97,110,116,101,101,100,32,116,
+    111,32,98,101,32,100,101,102,105,110,101,100,32,111,114,32,
+    99,111,117,108,100,32,98,101,32,115,101,116,32,116,111,32,
+    78,111,110,101,10,32,32,32,32,116,111,32,114,101,112,114,
+    101,115,101,110,116,32,116,104,97,116,32,105,116,115,32,112,
+    114,111,112,101,114,32,118,97,108,117,101,32,105,115,32,117,
+    110,107,110,111,119,110,46,10,10,32,32,32,32,114,134,0,
+    0,0,114,95,0,0,0,78,218,0,122,32,95,95,112,97,
+    99,107,97,103,101,95,95,32,33,61,32,95,95,115,112,101,
+    99,95,95,46,112,97,114,101,110,116,32,40,122,4,32,33,
+    61,32,250,1,41,114,140,0,0,0,233,3,0,0,0,122,
+    89,99,97,110,39,116,32,114,101,115,111,108,118,101,32,112,
+    97,99,107,97,103,101,32,102,114,111,109,32,95,95,115,112,
+    101,99,95,95,32,111,114,32,95,95,112,97,99,107,97,103,
+    101,95,95,44,32,102,97,108,108,105,110,103,32,98,97,99,
+    107,32,111,110,32,95,95,110,97,109,101,95,95,32,97,110,
+    100,32,95,95,112,97,116,104,95,95,114,1,0,0,0,114,
+    131,0,0,0,114,121,0,0,0,114,33,0,0,0,41,7,
+    114,42,0,0,0,114,123,0,0,0,114,142,0,0,0,114,
+    143,0,0,0,114,115,0,0,0,114,176,0,0,0,114,122,
+    0,0,0,41,3,218,7,103,108,111,98,97,108,115,114,170,
+    0,0,0,114,88,0,0,0,114,10,0,0,0,114,10,0,
+    0,0,114,11,0,0,0,218,17,95,99,97,108,99,95,95,
+    95,112,97,99,107,97,103,101,95,95,4,4,0,0,115,30,
+    0,0,0,0,7,15,1,15,1,12,1,27,1,42,2,13,
+    1,4,1,12,1,7,2,9,2,13,1,10,1,12,1,19,
+    1,114,200,0,0,0,99,5,0,0,0,0,0,0,0,9,
     0,0,0,5,0,0,0,67,0,0,0,115,227,0,0,0,
     124,4,0,100,1,0,107,2,0,114,27,0,116,0,0,124,
     0,0,131,1,0,125,5,0,110,54,0,124,1,0,100,2,
@@ -1870,17 +1879,17 @@ const unsigned char _Py_M__importlib[] = {
     111,117,108,100,32,104,97,118,101,32,97,32,39,108,101,118,
     101,108,39,32,111,102,32,50,41,46,10,10,32,32,32,32,
     114,33,0,0,0,78,114,121,0,0,0,41,8,114,187,0,
-    0,0,114,198,0,0,0,218,9,112,97,114,116,105,116,105,
+    0,0,114,200,0,0,0,218,9,112,97,114,116,105,116,105,
     111,110,114,168,0,0,0,114,14,0,0,0,114,21,0,0,
     0,114,1,0,0,0,114,195,0,0,0,41,9,114,15,0,
-    0,0,114,197,0,0,0,218,6,108,111,99,97,108,115,114,
+    0,0,114,199,0,0,0,218,6,108,111,99,97,108,115,114,
     193,0,0,0,114,171,0,0,0,114,89,0,0,0,90,8,
     103,108,111,98,97,108,115,95,114,170,0,0,0,90,7,99,
     117,116,95,111,102,102,114,10,0,0,0,114,10,0,0,0,
     114,11,0,0,0,218,10,95,95,105,109,112,111,114,116,95,
-    95,25,4,0,0,115,26,0,0,0,0,11,12,1,15,2,
+    95,31,4,0,0,115,26,0,0,0,0,11,12,1,15,2,
     24,1,12,1,18,1,6,3,12,1,23,1,6,1,4,4,
-    35,3,40,2,114,201,0,0,0,99,1,0,0,0,0,0,
+    35,3,40,2,114,203,0,0,0,99,1,0,0,0,0,0,
     0,0,2,0,0,0,3,0,0,0,67,0,0,0,115,53,
     0,0,0,116,0,0,106,1,0,124,0,0,131,1,0,125,
     1,0,124,1,0,100,0,0,107,8,0,114,43,0,116,2,
@@ -1891,8 +1900,8 @@ const unsigned char _Py_M__importlib[] = {
     0,0,114,77,0,0,0,114,150,0,0,0,41,2,114,15,
     0,0,0,114,88,0,0,0,114,10,0,0,0,114,10,0,
     0,0,114,11,0,0,0,218,18,95,98,117,105,108,116,105,
-    110,95,102,114,111,109,95,110,97,109,101,60,4,0,0,115,
-    8,0,0,0,0,1,15,1,12,1,16,1,114,202,0,0,
+    110,95,102,114,111,109,95,110,97,109,101,66,4,0,0,115,
+    8,0,0,0,0,1,15,1,12,1,16,1,114,204,0,0,
     0,99,2,0,0,0,0,0,0,0,12,0,0,0,12,0,
     0,0,67,0,0,0,115,74,1,0,0,124,1,0,97,0,
     0,124,0,0,97,1,0,116,2,0,116,1,0,131,1,0,
@@ -1937,7 +1946,7 @@ const unsigned char _Py_M__importlib[] = {
     0,114,21,0,0,0,218,5,105,116,101,109,115,114,178,0,
     0,0,114,76,0,0,0,114,151,0,0,0,114,82,0,0,
     0,114,161,0,0,0,114,132,0,0,0,114,137,0,0,0,
-    114,1,0,0,0,114,202,0,0,0,114,5,0,0,0,114,
+    114,1,0,0,0,114,204,0,0,0,114,5,0,0,0,114,
     77,0,0,0,41,12,218,10,115,121,115,95,109,111,100,117,
     108,101,218,11,95,105,109,112,95,109,111,100,117,108,101,90,
     11,109,111,100,117,108,101,95,116,121,112,101,114,15,0,0,
@@ -1948,10 +1957,10 @@ const unsigned char _Py_M__importlib[] = {
     101,97,100,95,109,111,100,117,108,101,90,14,119,101,97,107,
     114,101,102,95,109,111,100,117,108,101,114,10,0,0,0,114,
     10,0,0,0,114,11,0,0,0,218,6,95,115,101,116,117,
-    112,67,4,0,0,115,50,0,0,0,0,9,6,1,6,3,
+    112,73,4,0,0,115,50,0,0,0,0,9,6,1,6,3,
     12,1,28,1,15,1,15,1,9,1,15,1,9,2,3,1,
     15,1,17,3,13,1,13,1,15,1,15,2,13,1,20,3,
-    3,1,16,1,13,2,11,1,16,3,12,1,114,206,0,0,
+    3,1,16,1,13,2,11,1,16,3,12,1,114,208,0,0,
     0,99,2,0,0,0,0,0,0,0,3,0,0,0,3,0,
     0,0,67,0,0,0,115,87,0,0,0,116,0,0,124,0,
     0,124,1,0,131,2,0,1,116,1,0,106,2,0,106,3,
@@ -1963,15 +1972,15 @@ const unsigned char _Py_M__importlib[] = {
     112,111,114,116,108,105,98,32,97,115,32,116,104,101,32,105,
     109,112,108,101,109,101,110,116,97,116,105,111,110,32,111,102,
     32,105,109,112,111,114,116,46,114,33,0,0,0,78,41,11,
-    114,206,0,0,0,114,14,0,0,0,114,175,0,0,0,114,
+    114,208,0,0,0,114,14,0,0,0,114,175,0,0,0,114,
     113,0,0,0,114,151,0,0,0,114,161,0,0,0,218,26,
     95,102,114,111,122,101,110,95,105,109,112,111,114,116,108,105,
     98,95,101,120,116,101,114,110,97,108,114,119,0,0,0,218,
     8,95,105,110,115,116,97,108,108,114,21,0,0,0,114,1,
-    0,0,0,41,3,114,204,0,0,0,114,205,0,0,0,114,
-    207,0,0,0,114,10,0,0,0,114,10,0,0,0,114,11,
-    0,0,0,114,208,0,0,0,114,4,0,0,115,12,0,0,
-    0,0,2,13,2,16,1,16,3,12,1,6,1,114,208,0,
+    0,0,0,41,3,114,206,0,0,0,114,207,0,0,0,114,
+    209,0,0,0,114,10,0,0,0,114,10,0,0,0,114,11,
+    0,0,0,114,210,0,0,0,120,4,0,0,115,12,0,0,
+    0,0,2,13,2,16,1,16,3,12,1,6,1,114,210,0,
     0,0,41,51,114,3,0,0,0,114,119,0,0,0,114,12,
     0,0,0,114,16,0,0,0,114,17,0,0,0,114,59,0,
     0,0,114,41,0,0,0,114,48,0,0,0,114,31,0,0,
@@ -1987,8 +1996,8 @@ const unsigned char _Py_M__importlib[] = {
     0,114,172,0,0,0,114,174,0,0,0,114,177,0,0,0,
     114,182,0,0,0,114,192,0,0,0,114,183,0,0,0,114,
     185,0,0,0,114,186,0,0,0,114,187,0,0,0,114,195,
-    0,0,0,114,198,0,0,0,114,201,0,0,0,114,202,0,
-    0,0,114,206,0,0,0,114,208,0,0,0,114,10,0,0,
+    0,0,0,114,200,0,0,0,114,203,0,0,0,114,204,0,
+    0,0,114,208,0,0,0,114,210,0,0,0,114,10,0,0,
     0,114,10,0,0,0,114,10,0,0,0,114,11,0,0,0,
     218,8,60,109,111,100,117,108,101,62,8,0,0,0,115,96,
     0,0,0,6,17,6,2,12,8,12,4,19,20,6,2,6,
@@ -1996,6 +2005,6 @@ const unsigned char _Py_M__importlib[] = {
     8,12,11,12,12,12,16,12,36,19,27,19,101,24,26,9,
     3,18,45,18,60,12,18,12,17,12,25,12,29,12,23,12,
     16,19,73,19,77,19,13,12,9,12,9,15,40,12,17,6,
-    1,10,2,12,27,12,6,18,24,12,32,12,21,24,35,12,
+    1,10,2,12,27,12,6,18,24,12,32,12,27,24,35,12,
     7,12,47,
 };