[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

mypy/checkexpr.py

@@ -1,7 +1,6 @@
 """Expression type checker. This file is conceptually part of TypeChecker."""
+
 from __future__ import annotations
-from mypy.types import Instance
-from mypy.types import Instance, get_proper_type
 
 import enum
 import itertools
@@ -6275,13 +6274,12 @@ def visit_yield_from_expr(self, e: YieldFromExpr, allow_none_return: bool = Fals
         # containing this `yield from` expression.
         expected_item_type = self.chk.get_generator_yield_type(return_type, False)
 
-        
         iter_type_proper = get_proper_type(iter_type)
 
         if isinstance(iter_type_proper, Instance) and iter_type_proper.args:
-           actual_item_type = iter_type_proper.args[0]
+            actual_item_type = iter_type_proper.args[0]
         else:
-           actual_item_type = self.chk.get_generator_yield_type(iter_type, False)
+            actual_item_type = self.chk.get_generator_yield_type(iter_type, False)
 
         self.chk.check_subtype(
             actual_item_type,

test-data/unit/check-functions.test

@@ -3778,4 +3778,4 @@ class A(Iterator[int]):
     def __iter__(self) -> "A": ...
 
 def f() -> Generator[tuple[int, ...], None, None]:
-    yield from A()  # E: Incompatible types in "yield"
+    yield from A()  # E: Incompatible types in "yield"