Issue #13959: Deprecate imp.get_suffixes() for new attributes on

importlib.machinery that provide the suffix details for import.
The attributes were not put on imp so as to compartmentalize
everything importlib needs for setting up imports in
importlib.machinery.

This also led to an indirect deprecation of inspect.getmoduleinfo() as
it directly returned imp.get_suffix's returned tuple which no longer
makes sense.

Lib/importlib/test/source/test_case_sensitivity.py

@@ -1,5 +1,6 @@
 """Test case-sensitivity (PEP 235)."""
 from importlib import _bootstrap
+from importlib import machinery
 from .. import util
 from . import util as source_util
 import imp
@@ -20,12 +21,12 @@ class CaseSensitivityTest(unittest.TestCase):
     assert name != name.lower()
 
     def find(self, path):
-        finder = _bootstrap.FileFinder(path,
-                                        (_bootstrap.SourceFileLoader,
-                                            _bootstrap._SOURCE_SUFFIXES,
+        finder = machinery.FileFinder(path,
+                                      (machinery.SourceFileLoader,
+                                            machinery.SOURCE_SUFFIXES,
                                             True),
-                                        (_bootstrap.SourcelessFileLoader,
-                                            [_bootstrap._BYTECODE_SUFFIX],
+                                        (machinery.SourcelessFileLoader,
+                                            machinery.BYTECODE_SUFFIXES,
                                             True))
         return finder.find_module(self.name)
 

Lib/importlib/test/source/test_finder.py

@@ -1,7 +1,7 @@
 from .. import abc
 from . import util as source_util
 
-from importlib import _bootstrap
+from importlib import machinery
 import errno
 import imp
 import os
@@ -36,11 +36,11 @@ class FinderTests(abc.FinderTests):
     """
 
     def import_(self, root, module):
-        loader_details = [(_bootstrap.SourceFileLoader,
-                            _bootstrap._SOURCE_SUFFIXES, True),
-                          (_bootstrap.SourcelessFileLoader,
-                            [_bootstrap._BYTECODE_SUFFIX], True)]
-        finder = _bootstrap.FileFinder(root, *loader_details)
+        loader_details = [(machinery.SourceFileLoader,
+                            machinery.SOURCE_SUFFIXES, True),
+                          (machinery.SourcelessFileLoader,
+                            machinery.BYTECODE_SUFFIXES, True)]
+        finder = machinery.FileFinder(root, *loader_details)
         return finder.find_module(module)
 
     def run_test(self, test, create=None, *, compile_=None, unlink=None):
@@ -138,8 +138,8 @@ class FinderTests(abc.FinderTests):
 
     def test_empty_string_for_dir(self):
         # The empty string from sys.path means to search in the cwd.
-        finder = _bootstrap.FileFinder('', (_bootstrap.SourceFileLoader,
-            _bootstrap._SOURCE_SUFFIXES, True))
+        finder = machinery.FileFinder('', (machinery.SourceFileLoader,
+            machinery.SOURCE_SUFFIXES, True))
         with open('mod.py', 'w') as file:
             file.write("# test file for importlib")
         try:
@@ -150,8 +150,8 @@ class FinderTests(abc.FinderTests):
 
     def test_invalidate_caches(self):
         # invalidate_caches() should reset the mtime.
-        finder = _bootstrap.FileFinder('', (_bootstrap.SourceFileLoader,
-            _bootstrap._SOURCE_SUFFIXES, True))
+        finder = machinery.FileFinder('', (machinery.SourceFileLoader,
+            machinery.SOURCE_SUFFIXES, True))
         finder._path_mtime = 42
         finder.invalidate_caches()
         self.assertEqual(finder._path_mtime, -1)

Lib/importlib/test/source/test_path_hook.py

@@ -1,6 +1,6 @@
 from . import util as source_util
 
-from importlib import _bootstrap
+from importlib import machinery
 import imp
 import unittest
 
@@ -10,8 +10,8 @@ class PathHookTest(unittest.TestCase):
     """Test the path hook for source."""
 
     def path_hook(self):
-        return _bootstrap.FileFinder.path_hook((_bootstrap.SourceFileLoader,
-            _bootstrap._SOURCE_SUFFIXES, True))
+        return machinery.FileFinder.path_hook((machinery.SourceFileLoader,
+            machinery.SOURCE_SUFFIXES, True))
 
     def test_success(self):
         with source_util.create_modules('dummy') as mapping: