update import and test

Author: jorisvandenbossche

pandas/core/strings/accessor.py

@@ -31,6 +31,7 @@
     is_list_like,
     is_object_dtype,
     is_re,
+    is_string_dtype,
 )
 from pandas.core.dtypes.dtypes import (
     ArrowDtype,
@@ -2522,8 +2523,6 @@ def get_dummies(
         1   False  False   False
         2   True   False   True
         """
-        from pandas.core.dtypes.common import is_string_dtype
-
         from pandas.core.frame import DataFrame
 
         if is_string_dtype(dtype):

pandas/tests/strings/test_get_dummies.py

@@ -97,13 +97,3 @@ def test_get_dummies_with_str_dtype(any_string_dtype):
         ValueError, match="string dtype not supported, please use a numeric dtype"
     ):
         s.str.get_dummies("|", dtype=str)
-
-
-# GH#47872
-@td.skip_if_no("pyarrow")
-def test_get_dummies_with_pa_str_dtype(any_string_dtype):
-    s = Series(["a|b", "a|c", np.nan], dtype=any_string_dtype)
-    with pytest.raises(
-        ValueError, match="string dtype not supported, please use a numeric dtype"
-    ):
-        s.str.get_dummies("|", dtype="str[pyarrow]")