resolving issue 1162 I change Hashable to HashableT in _LocIndexerFrame and it'… (pandas-dev#1165)

* issue 1162 I change Hashable to HashableT in _LocIndexerFrame and it's fine

* issue 1162 added test_loc_list_str function for test loc issue with list of str's

* issue 1162 added test_loc_list_str function for test loc issue with list of str's and instlled pre-commit

---------

Co-authored-by: shirzady1934 <[email protected]>

Author: shirzady1934

pandas-stubs/core/frame.pyi

@@ -185,7 +185,7 @@ class _LocIndexerFrame(_LocIndexer, Generic[_T]):
             IndexType
             | MaskType
             | Callable[[DataFrame], IndexType | MaskType | Sequence[Hashable]]
-            | list[Hashable]
+            | list[HashableT]
             | tuple[
                 IndexType
                 | MaskType

tests/test_frame.py

@@ -3586,6 +3586,18 @@ def test_in_columns() -> None:
     check(assert_type(df.groupby(by=cols).sum(), pd.DataFrame), pd.DataFrame)
 
 
+def test_loc_list_str() -> None:
+    # GH 1162 (PR)
+    df = pd.DataFrame(
+        [[1, 2], [4, 5], [7, 8]],
+        index=["cobra", "viper", "sidewinder"],
+        columns=["max_speed", "shield"],
+    )
+
+    result = df.loc[["viper", "sidewinder"]]
+    check(assert_type(result, pd.DataFrame), pd.DataFrame)
+
+
 def test_insert_newvalues() -> None:
     df = pd.DataFrame({"a": [1, 2]})
     ab = pd.DataFrame({"col1": [1, 2], "col2": [3, 4]})