fixed "pandas/util/*" = ["TCH"] (#51888)

* fixed "pandas/util/*" = ["TCH"]

* ixups

* Update _test_decorators.py

Author: ahmad-04

pandas/util/_print_versions.py

@@ -7,8 +7,11 @@
 import platform
 import struct
 import sys
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from pandas._typing import JSONSerializable
 
-from pandas._typing import JSONSerializable
 from pandas.compat._optional import (
     VERSIONS,
     get_version,

pandas/util/_test_decorators.py

@@ -26,14 +26,18 @@ def test_foo():
 from __future__ import annotations
 
 import locale
-from typing import Callable
+from typing import (
+    TYPE_CHECKING,
+    Callable,
+)
 
 import numpy as np
 import pytest
 
 from pandas._config import get_option
 
-from pandas._typing import F
+if TYPE_CHECKING:
+    from pandas._typing import F
 from pandas.compat import (
     IS64,
     is_platform_windows,

pyproject.toml

@@ -295,7 +295,6 @@ exclude = [
 # TCH to be enabled gradually
 "pandas/core/arrays/*" = ["TCH"]
 "pandas/core/nanops.py" = ["TCH"]
-"pandas/util/*" = ["TCH"]
 "pandas/_libs/*" = ["TCH"]
 # Keep this one enabled
 "pandas/_typing.py" = ["TCH"]