Fix a regression in 2.15.7 for unsubscriptable-object.

- Raise an `InferenceError` when there is a `SyntaxError` due to an invalid `TypeVar` name.

Closes pylint-dev#2305
Closes pylint-dev/pylint#9069

ChangeLog

@@ -223,10 +223,24 @@ Release date: TBA
   Closes pylint-dev/pylint#9015
 
 
+What's New in astroid 2.15.8?
+=============================
+Release date: TBA
+
+* Fix a regression in 2.15.7 for ``unsubscriptable-object``.
+
+  Closes #2305
+  Closes pylint-dev/pylint#9069
+
+
 What's New in astroid 2.15.7?
 =============================
 Release date: 2023-09-23
 
+* Fix a crash when inferring a ``typing.TypeVar`` call.
+
+  Closes pylint-dev/pylint#8802
+
 * Infer user-defined enum classes by checking if the class is a subtype of ``enum.Enum``.
 
   Closes pylint-dev/pylint#8897
@@ -244,7 +258,7 @@ Release date: 2023-09-23
 
 What's New in astroid 2.15.6?
 =============================
-Release date: TBA
+Release date: 2023-07-08
 
 * Harden ``get_module_part()`` against ``"."``.
 

astroid/brain/brain_typing.py

@@ -17,6 +17,7 @@
 from astroid.builder import AstroidBuilder, _extract_single_node
 from astroid.const import PY39_PLUS, PY312_PLUS
 from astroid.exceptions import (
+    AstroidSyntaxError,
     AttributeInferenceError,
     InferenceError,
     UseInferenceDefault,
@@ -134,7 +135,10 @@ def infer_typing_typevar_or_newtype(node, context_itton=None):
         raise UseInferenceDefault
 
     typename = node.args[0].as_string().strip("'")
-    node = extract_node(TYPING_TYPE_TEMPLATE.format(typename))
+    try:
+        node = extract_node(TYPING_TYPE_TEMPLATE.format(typename))
+    except AstroidSyntaxError as exc:
+        raise InferenceError from exc
     return node.infer(context=context_itton)
 
 

tests/brain/test_typing.py

@@ -0,0 +1,25 @@
+# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+# For details: https://github.com/pylint-dev/astroid/blob/main/LICENSE
+# Copyright (c) https://github.com/pylint-dev/astroid/blob/main/CONTRIBUTORS.txt
+
+import pytest
+
+from astroid import builder, nodes
+from astroid.exceptions import InferenceError
+
+
+def test_infer_typevar() -> None:
+    """
+    Regression test for: https://github.com/pylint-dev/pylint/issues/8802
+
+    Test that an inferred `typing.TypeVar()` call produces a `nodes.ClassDef`
+    node.
+    """
+    assign_node = builder.extract_node(
+        """
+    from typing import TypeVar
+    TypeVar('My.Type')
+    """
+    )
+    with pytest.raises(InferenceError):
+        assign_node.inferred()