diff --git a/sphinx/domains/python/__init__.py b/sphinx/domains/python/__init__.py
index cac8e0176..92243f6c7 100644
--- a/sphinx/domains/python/__init__.py
+++ b/sphinx/domains/python/__init__.py
@@ -594,19 +594,42 @@ class PythonModuleIndex(Index):
                     # first submodule - make parent a group head
                     if entries:
                         last = entries[-1]
-                        entries[-1] = IndexEntry(last[0], 1, last[2], last[3],
-                                                 last[4], last[5], last[6])
+                        entries[-1] = IndexEntry(
+                            name=last.name,
+                            subtype=1,
+                            docname=last.docname,
+                            anchor=last.anchor,
+                            extra=last.extra,
+                            qualifier=last.qualifier,
+                            descr=last.descr,
+                        )
                 elif not prev_modname.startswith(package):
                     # submodule without parent in list, add dummy entry
-                    entries.append(IndexEntry(stripped + package, 1, '', '', '', '', ''))
+                    dummy_entry = IndexEntry(
+                        name=stripped + package,
+                        subtype=1,
+                        docname='',
+                        anchor='',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    )
+                    entries.append(dummy_entry)
                 subtype = 2
             else:
                 num_toplevels += 1
                 subtype = 0
 
-            qualifier = _('Deprecated') if deprecated else ''
-            entries.append(IndexEntry(stripped + modname, subtype, docname,
-                                      node_id, platforms, qualifier, synopsis))
+            entry = IndexEntry(
+                name=stripped + modname,
+                subtype=subtype,
+                docname=module.docname,
+                anchor=module.node_id,
+                extra=module.platform,
+                qualifier=_('Deprecated') if module.deprecated else '',
+                descr=module.synopsis,
+            )
+            entries.append(entry)
             prev_modname = modname
 
         # apply heuristics when to collapse modindex at page load:
diff --git a/tests/test_domains/test_domain_py.py b/tests/test_domains/test_domain_py.py
index 74531d109..9f19f1da3 100644
--- a/tests/test_domains/test_domain_py.py
+++ b/tests/test_domains/test_domain_py.py
@@ -572,34 +572,67 @@ def test_module_index(app):
     index = PythonModuleIndex(app.env.domains.python_domain)
     assert index.generate() == (
         [
-            ('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
+            (
+                'd',
+                [
+                    IndexEntry(
+                        name='docutils',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-docutils',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                ],
+            ),
             (
                 's',
                 [
-                    IndexEntry('sphinx', 1, 'index', 'module-sphinx', '', '', ''),
                     IndexEntry(
-                        'sphinx.builders',
-                        2,
-                        'index',
-                        'module-sphinx.builders',
-                        '',
-                        '',
-                        '',
+                        name='sphinx',
+                        subtype=1,
+                        docname='index',
+                        anchor='module-sphinx',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                     IndexEntry(
-                        'sphinx.builders.html',
-                        2,
-                        'index',
-                        'module-sphinx.builders.html',
-                        '',
-                        '',
-                        '',
+                        name='sphinx.builders',
+                        subtype=2,
+                        docname='index',
+                        anchor='module-sphinx.builders',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                     IndexEntry(
-                        'sphinx.config', 2, 'index', 'module-sphinx.config', '', '', ''
+                        name='sphinx.builders.html',
+                        subtype=2,
+                        docname='index',
+                        anchor='module-sphinx.builders.html',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                     IndexEntry(
-                        'sphinx_intl', 0, 'index', 'module-sphinx_intl', '', '', ''
+                        name='sphinx.config',
+                        subtype=2,
+                        docname='index',
+                        anchor='module-sphinx.config',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                    IndexEntry(
+                        name='sphinx_intl',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-sphinx_intl',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                 ],
             ),
@@ -618,9 +651,23 @@ def test_module_index_submodule(app):
             (
                 's',
                 [
-                    IndexEntry('sphinx', 1, '', '', '', '', ''),
                     IndexEntry(
-                        'sphinx.config', 2, 'index', 'module-sphinx.config', '', '', ''
+                        name='sphinx',
+                        subtype=1,
+                        docname='',
+                        anchor='',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                    IndexEntry(
+                        name='sphinx.config',
+                        subtype=2,
+                        docname='index',
+                        anchor='module-sphinx.config',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                 ],
             )
@@ -636,8 +683,34 @@ def test_module_index_not_collapsed(app):
     index = PythonModuleIndex(app.env.domains.python_domain)
     assert index.generate() == (
         [
-            ('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
-            ('s', [IndexEntry('sphinx', 0, 'index', 'module-sphinx', '', '', '')]),
+            (
+                'd',
+                [
+                    IndexEntry(
+                        name='docutils',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-docutils',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                ],
+            ),
+            (
+                's',
+                [
+                    IndexEntry(
+                        name='sphinx',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-sphinx',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                ],
+            ),
         ],
         True,
     )
@@ -666,22 +739,22 @@ def test_modindex_common_prefix(app):
                 'b',
                 [
                     IndexEntry(
-                        'sphinx.builders',
-                        1,
-                        'index',
-                        'module-sphinx.builders',
-                        '',
-                        '',
-                        '',
+                        name='sphinx.builders',
+                        subtype=1,
+                        docname='index',
+                        anchor='module-sphinx.builders',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                     IndexEntry(
-                        'sphinx.builders.html',
-                        2,
-                        'index',
-                        'module-sphinx.builders.html',
-                        '',
-                        '',
-                        '',
+                        name='sphinx.builders.html',
+                        subtype=2,
+                        docname='index',
+                        anchor='module-sphinx.builders.html',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                 ],
             ),
@@ -689,17 +762,50 @@ def test_modindex_common_prefix(app):
                 'c',
                 [
                     IndexEntry(
-                        'sphinx.config', 0, 'index', 'module-sphinx.config', '', '', ''
-                    )
+                        name='sphinx.config',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-sphinx.config',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                ],
+            ),
+            (
+                'd',
+                [
+                    IndexEntry(
+                        name='docutils',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-docutils',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
                 ],
             ),
-            ('d', [IndexEntry('docutils', 0, 'index', 'module-docutils', '', '', '')]),
             (
                 's',
                 [
-                    IndexEntry('sphinx', 0, 'index', 'module-sphinx', '', '', ''),
                     IndexEntry(
-                        'sphinx_intl', 0, 'index', 'module-sphinx_intl', '', '', ''
+                        name='sphinx',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-sphinx',
+                        extra='',
+                        qualifier='',
+                        descr='',
+                    ),
+                    IndexEntry(
+                        name='sphinx_intl',
+                        subtype=0,
+                        docname='index',
+                        anchor='module-sphinx_intl',
+                        extra='',
+                        qualifier='',
+                        descr='',
                     ),
                 ],
             ),