WIP Python 3.12 support for removal of imp module

build.sh

@@ -3,7 +3,7 @@ set -xuo pipefail
 
 DOCKER_IMAGE=jmadler/python-future-builder
 # XXX: TODO: Perhaps this version shouldn't be hardcoded
-version=0.18.3
+version=0.18.4
 
 docker build . -t $DOCKER_IMAGE
 docker push $DOCKER_IMAGE:latest

docs/whatsnew.rst

@@ -3,6 +3,12 @@
 What's New
 **********
 
+What's new in version 0.18.4 (2023-10-10)
+=========================================
+This is a minor bug-fix release containing a number of fixes:
+
+- Fix for Python 3.12's removal of the imp module
+
 What's new in version 0.18.3 (2023-01-13)
 =========================================
 This is a minor bug-fix release containing a number of fixes:

src/future/__init__.py

@@ -87,7 +87,7 @@
 __copyright__ = 'Copyright 2013-2019 Python Charmers Pty Ltd'
 __ver_major__ = 0
 __ver_minor__ = 18
-__ver_patch__ = 3
+__ver_patch__ = 4
 __ver_sub__ = ''
 __version__ = "%d.%d.%d%s" % (__ver_major__, __ver_minor__,
                               __ver_patch__, __ver_sub__)

src/future/backports/test/support.py

@@ -28,7 +28,10 @@
 # import collections.abc    # not present on Py2.7
 import re
 import subprocess
-import imp
+try:
+    from imp import cache_from_source
+except ImportError:
+    from importlib.util import cache_from_source
 import time
 try:
     import sysconfig
@@ -351,7 +354,7 @@ def make_legacy_pyc(source):
         does not need to exist, however the PEP 3147 pyc file must exist.
     :return: The file system path to the legacy pyc file.
     """
-    pyc_file = imp.cache_from_source(source)
+    pyc_file = cache_from_source(source)
     up_one = os.path.dirname(os.path.abspath(source))
     legacy_pyc = os.path.join(up_one, source + ('c' if __debug__ else 'o'))
     os.rename(pyc_file, legacy_pyc)
@@ -370,8 +373,8 @@ def forget(modname):
         # combinations of PEP 3147 and legacy pyc and pyo files.
         unlink(source + 'c')
         unlink(source + 'o')
-        unlink(imp.cache_from_source(source, debug_override=True))
-        unlink(imp.cache_from_source(source, debug_override=False))
+        unlink(cache_from_source(source, debug_override=True))
+        unlink(cache_from_source(source, debug_override=False))
 
 # On some platforms, should not run gui test even if it is allowed
 # in `use_resources'.

src/future/standard_library/__init__.py

@@ -62,7 +62,10 @@
 
 import sys
 import logging
-import imp
+try:
+    import importlib
+except ImportError:
+    import imp
 import contextlib
 import types
 import copy
@@ -297,8 +300,11 @@ def _find_and_load_module(self, name, path=None):
                 flog.debug('What to do here?')
 
         name = bits[0]
-        module_info = imp.find_module(name, path)
-        return imp.load_module(name, *module_info)
+        try:
+            module_info = imp.find_module(name, path)
+            return imp.load_module(name, *module_info)
+        except AttributeError:
+            return importlib.import_module(name, path)
 
 
 class hooks(object):

src/past/translation/__init__.py

@@ -32,7 +32,10 @@
 Inspired by and based on ``uprefix`` by Vinay M. Sajip.
 """
 
-import imp
+try:
+    import imp
+except ImportError:
+    import importlib
 import logging
 import marshal
 import os

tests/test_future/test_standard_library.py

@@ -447,9 +447,14 @@ def test_reload(self):
         """
         reload has been moved to the imp module
         """
-        import imp
-        imp.reload(imp)
-        self.assertTrue(True)
+        try:
+            import imp
+            imp.reload(imp)
+            self.assertTrue(True)
+        except ImportError:
+            import importlib
+            importlib.reload(importlib)
+            self.assertTrue(True)
 
     def test_install_aliases(self):
         """