fix the string datatype

Author: espoirMur

.gitignore

@@ -137,3 +137,4 @@ doc/source/savefig/
 # Interactive terminal generated files #
 ########################################
 .jupyterlite.doit.db
+.venv

pandas/core/arrays/string_.py

@@ -64,7 +64,7 @@
 from pandas.core.construction import extract_array
 from pandas.core.indexers import check_array_indexer
 from pandas.core.missing import isna
-
+from pandas.util._decorators import set_module
 from pandas.io.formats import printing
 
 if TYPE_CHECKING:
@@ -86,6 +86,7 @@
     from pandas import Series
 
 
+@set_module("pandas")
 @register_extension_dtype
 class StringDtype(StorageExtensionDtype):
     """
@@ -373,7 +374,7 @@ def __from_arrow__(
         NDArrayBacked.__init__(new_string_array, arr, self)
         return new_string_array
 
-
+@set_module("pandas")
 class BaseStringArray(ExtensionArray):
     """
     Mixin class for StringArray, ArrowStringArray.
@@ -532,6 +533,7 @@ def _str_map_nan_semantics(
 
 # error: Definition of "_concat_same_type" in base class "NDArrayBacked" is
 # incompatible with definition in base class "ExtensionArray"
+
 class StringArray(BaseStringArray, NumpyExtensionArray):  # type: ignore[misc]
     """
     Extension array for string data.
@@ -959,6 +961,7 @@ def _cmp_method(self, other, op):
     _arith_method = _cmp_method
 
 
+
 class StringArrayNumpySemantics(StringArray):
     _storage = "python"
     _na_value = np.nan

pandas/tests/api/test_api.py

@@ -416,3 +416,7 @@ def test_set_module():
     assert pd.Period.__module__ == "pandas"
     assert pd.Timestamp.__module__ == "pandas"
     assert pd.Timedelta.__module__ == "pandas"
+    assert pd.StringDtype.__module__ == "pandas"
+    assert pd.BaseStringArray.__module__ == "pandas"
+    assert pd.StringArrayNumpySemantics.___module__ == "pandas"
+    assert pd.StringArray.__module__ == "pandas"