The ansi extension is only on 3.10+. Note this in changes and fix the test that assumed it.

Author: jamadden

CHANGES.rst

@@ -6,9 +6,12 @@
 =================
 
 - Reintroduce ANSI output integration through the
-  ``programoutput_use_ansi`` configuration value. When enabled, command
-  output is emitted as an ANSI-aware literal block for processing by the
-  ``erbsland.sphinx.ansi`` extension.
+  ``programoutput_use_ansi`` configuration value. When enabled,
+  command output is emitted as an ANSI-aware literal block for
+  processing by the `erbsland.sphinx.ansi
+  <https://pypi.org/project/erbsland-sphinx-ansi/>`_ extension. Note
+  that this extension and thus ANSI support is only available on
+  Python 3.10 and newer.
 
 
 0.18 (2024-12-06)

src/sphinxcontrib/programoutput/tests/test_directive.py

@@ -487,6 +487,8 @@ def test_use_ansi_missing_extension(self):
     .. program-output:: python -c 'print("\\x1b[31mspam\\x1b[0m")'""",
                   programoutput_use_ansi=True,
                   extensions=['sphinxcontrib.programoutput', 'erbsland.sphinx.ansi'])
+    @unittest.skipIf(sys.version_info[:2] < (3, 10),
+                     "The extension is only available on 3.10+")
     def test_use_ansi_enabled_extension(self):
         with Patch('sphinxcontrib.programoutput.logger.warning') as patch_warning:
             doctree = self.doctree