Update black formatting for Python 3.9 (#18335)

Author: cdce8p

mypy/checkexpr.py

@@ -5345,9 +5345,10 @@ def visit_lambda_expr(self, e: LambdaExpr) -> Type:
             self.chk.return_types.append(AnyType(TypeOfAny.special_form))
             # Type check everything in the body except for the final return
             # statement (it can contain tuple unpacking before return).
-            with self.chk.binder.frame_context(
-                can_skip=True, fall_through=0
-            ), self.chk.scope.push_function(e):
+            with (
+                self.chk.binder.frame_context(can_skip=True, fall_through=0),
+                self.chk.scope.push_function(e),
+            ):
                 # Lambdas can have more than one element in body,
                 # when we add "fictional" AssignmentStatement nodes, like in:
                 # `lambda (a, b): a`

mypyc/test/test_run.py

@@ -146,9 +146,10 @@ class TestRun(MypycDataSuite):
     def run_case(self, testcase: DataDrivenTestCase) -> None:
         # setup.py wants to be run from the root directory of the package, which we accommodate
         # by chdiring into tmp/
-        with use_custom_builtins(
-            os.path.join(self.data_prefix, ICODE_GEN_BUILTINS), testcase
-        ), chdir_manager("tmp"):
+        with (
+            use_custom_builtins(os.path.join(self.data_prefix, ICODE_GEN_BUILTINS), testcase),
+            chdir_manager("tmp"),
+        ):
             self.run_case_inner(testcase)
 
     def run_case_inner(self, testcase: DataDrivenTestCase) -> None:

pyproject.toml

@@ -92,7 +92,7 @@ mypy = [
 
 [tool.black]
 line-length = 99
-target-version = ["py38", "py39", "py310", "py311", "py312"]
+target-version = ["py39", "py310", "py311", "py312", "py313"]
 skip-magic-trailing-comma = true
 force-exclude = '''
 ^/mypy/typeshed|