From 599500f610b7e0e4d971c39ee9f422a5af7b1cb4 Mon Sep 17 00:00:00 2001
From: MomIsBestFriend <>
Date: Thu, 30 Jan 2020 16:31:04 +0200
Subject: [PATCH 1/3] TYP: Type annotaion

---
 pandas/util/_test_decorators.py | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/pandas/util/_test_decorators.py b/pandas/util/_test_decorators.py
index d8804994af426..11f2d5285e4c9 100644
--- a/pandas/util/_test_decorators.py
+++ b/pandas/util/_test_decorators.py
@@ -23,6 +23,7 @@ def test_foo():
 
 For more information, refer to the ``pytest`` documentation on ``skipif``.
 """
+
 from distutils.version import LooseVersion
 from functools import wraps
 import locale
@@ -30,6 +31,7 @@ def test_foo():
 
 import numpy as np
 import pytest
+from pytest.mark.structures import MarkDecorator
 
 from pandas.compat import is_platform_32bit, is_platform_windows
 from pandas.compat._optional import import_optional_dependency
@@ -120,7 +122,7 @@ def _skip_if_no_scipy() -> bool:
     )
 
 
-def skip_if_installed(package: str) -> Callable:
+def skip_if_installed(package: str) -> MarkDecorator:
     """
     Skip a test if a package is installed.
 
@@ -134,7 +136,7 @@ def skip_if_installed(package: str) -> Callable:
     )
 
 
-def skip_if_no(package: str, min_version: Optional[str] = None) -> Callable:
+def skip_if_no(package: str, min_version: Optional[str] = None) -> MarkDecorator:
     """
     Generic function to help skip tests when required packages are not
     present on the testing system.
@@ -196,9 +198,7 @@ def skip_if_no(package: str, min_version: Optional[str] = None) -> Callable:
 )
 
 
-def skip_if_np_lt(
-    ver_str: str, reason: Optional[str] = None, *args, **kwds
-) -> Callable:
+def skip_if_np_lt(ver_str: str, reason: Optional[str] = None, *args, **kwds) -> MarkDecorator:
     if reason is None:
         reason = f"NumPy {ver_str} or greater required"
     return pytest.mark.skipif(
@@ -254,7 +254,7 @@ def new_func(*args, **kwargs):
     return new_func
 
 
-def async_mark():
+def async_mark() -> MarkDecorator:
     try:
         import_optional_dependency("pytest_asyncio")
         async_mark = pytest.mark.asyncio

From a954c1b6bce02c631f7b2045e1dbf629122aab35 Mon Sep 17 00:00:00 2001
From: MomIsBestFriend <>
Date: Thu, 30 Jan 2020 17:09:16 +0200
Subject: [PATCH 2/3] Fix importing

---
 pandas/util/_test_decorators.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pandas/util/_test_decorators.py b/pandas/util/_test_decorators.py
index 11f2d5285e4c9..050a3bd55c140 100644
--- a/pandas/util/_test_decorators.py
+++ b/pandas/util/_test_decorators.py
@@ -29,9 +29,9 @@ def test_foo():
 import locale
 from typing import Callable, Optional
 
+from _pytest.mark.structures import MarkDecorator
 import numpy as np
 import pytest
-from pytest.mark.structures import MarkDecorator
 
 from pandas.compat import is_platform_32bit, is_platform_windows
 from pandas.compat._optional import import_optional_dependency

From 8ca8822a4ae5a4cfac4783a6f72df6b88fa24fa5 Mon Sep 17 00:00:00 2001
From: MomIsBestFriend <>
Date: Thu, 30 Jan 2020 17:52:35 +0200
Subject: [PATCH 3/3] Black

---
 pandas/util/_test_decorators.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/pandas/util/_test_decorators.py b/pandas/util/_test_decorators.py
index 050a3bd55c140..b944ed48e2210 100644
--- a/pandas/util/_test_decorators.py
+++ b/pandas/util/_test_decorators.py
@@ -198,7 +198,9 @@ def skip_if_no(package: str, min_version: Optional[str] = None) -> MarkDecorator
 )
 
 
-def skip_if_np_lt(ver_str: str, reason: Optional[str] = None, *args, **kwds) -> MarkDecorator:
+def skip_if_np_lt(
+    ver_str: str, reason: Optional[str] = None, *args, **kwds
+) -> MarkDecorator:
     if reason is None:
         reason = f"NumPy {ver_str} or greater required"
     return pytest.mark.skipif(