Replacing list concatenation with "+"

Author: Blake Hawkins

pandas/tests/dtypes/test_common.py

@@ -324,11 +324,13 @@ def test_is_datetimelike():
 
 @pytest.mark.parametrize(
     "dtype",
-    [pd.Series([1, 2])]
-    + ALL_INT_DTYPES
-    + to_numpy_dtypes(ALL_INT_DTYPES)
-    + ALL_EA_INT_DTYPES
-    + to_ea_dtypes(ALL_EA_INT_DTYPES),
+    [
+        type(pd.Series([1, 2])),
+        *ALL_INT_DTYPES,
+        *to_numpy_dtypes(ALL_INT_DTYPES),
+        *ALL_EA_INT_DTYPES,
+        *to_ea_dtypes(ALL_EA_INT_DTYPES)
+    ]
 )
 def test_is_integer_dtype(dtype):
     assert com.is_integer_dtype(dtype)
@@ -352,11 +354,13 @@ def test_is_not_integer_dtype(dtype):
 
 @pytest.mark.parametrize(
     "dtype",
-    [pd.Series([1, 2])]
-    + SIGNED_INT_DTYPES
-    + to_numpy_dtypes(SIGNED_INT_DTYPES)
-    + SIGNED_EA_INT_DTYPES
-    + to_ea_dtypes(SIGNED_EA_INT_DTYPES),
+    [
+        type(pd.Series([1, 2])),
+        *SIGNED_INT_DTYPES,
+        *to_numpy_dtypes(SIGNED_INT_DTYPES),
+        *SIGNED_EA_INT_DTYPES,
+        *to_ea_dtypes(SIGNED_EA_INT_DTYPES)
+    ]
 )
 def test_is_signed_integer_dtype(dtype):
     assert com.is_integer_dtype(dtype)
@@ -384,11 +388,13 @@ def test_is_not_signed_integer_dtype(dtype):
 
 @pytest.mark.parametrize(
     "dtype",
-    [pd.Series([1, 2], dtype=np.uint32)]
-    + UNSIGNED_INT_DTYPES
-    + to_numpy_dtypes(UNSIGNED_INT_DTYPES)
-    + UNSIGNED_EA_INT_DTYPES
-    + to_ea_dtypes(UNSIGNED_EA_INT_DTYPES),
+    [
+        type(pd.Series([1, 2], dtype=np.uint32)),
+        *UNSIGNED_INT_DTYPES,
+        *to_numpy_dtypes(UNSIGNED_INT_DTYPES),
+        *UNSIGNED_EA_INT_DTYPES,
+        *to_ea_dtypes(UNSIGNED_EA_INT_DTYPES)
+    ]
 )
 def test_is_unsigned_integer_dtype(dtype):
     assert com.is_unsigned_integer_dtype(dtype)

setup.cfg

@@ -145,8 +145,6 @@ ignore_errors=True
 [mypy-pandas.tests.arrays.test_period]
 ignore_errors=True
 
-[mypy-pandas.tests.dtypes.test_common]
-ignore_errors=True
 
 [mypy-pandas.tests.dtypes.test_inference]
 ignore_errors=True