Suppress SyntaxWarnings when parsing modules (#2386)

Co-authored-by: Jacob Walls <[email protected]>

Author: cdce8p

ChangeLog

@@ -27,6 +27,10 @@ Release date: TBA
 * Include modname in AST warnings. Useful for ``invalid escape sequence`` warnings
   with Python 3.12.
 
+* Suppress ``SyntaxWarning`` for invalid escape sequences on Python 3.12 when parsing modules.
+
+  Closes pylint-dev/pylint#9322
+
 
 
 What's New in astroid 3.0.3?

astroid/builder.py

@@ -14,12 +14,14 @@
 import os
 import textwrap
 import types
+import warnings
 from collections.abc import Iterator, Sequence
 from io import TextIOWrapper
 from tokenize import detect_encoding
 
 from astroid import bases, modutils, nodes, raw_building, rebuilder, util
 from astroid._ast import ParserModule, get_parser_module
+from astroid.const import PY312_PLUS
 from astroid.exceptions import AstroidBuildingError, AstroidSyntaxError, InferenceError
 from astroid.manager import AstroidManager
 
@@ -33,6 +35,9 @@
 _STATEMENT_SELECTOR = "#@"
 MISPLACED_TYPE_ANNOTATION_ERROR = "misplaced type annotation"
 
+if PY312_PLUS:
+    warnings.filterwarnings("ignore", "invalid escape sequence", SyntaxWarning)
+
 
 def open_source_file(filename: str) -> tuple[TextIOWrapper, str, str]:
     # pylint: disable=consider-using-with