Revert "revert support of TextIOWrapper"

This reverts commit ae5c0f1.

Author: DanielYang59

src/pymatgen/io/cif.py

@@ -10,7 +10,7 @@
 from collections import defaultdict, deque
 from functools import partial
 from inspect import getfullargspec
-from io import StringIO, TextIOWrapper
+from io import StringIO
 from itertools import groupby
 from pathlib import Path
 from typing import TYPE_CHECKING, Literal, cast
@@ -344,13 +344,6 @@ def __init__(
         if isinstance(filename, (str | Path)):
             with zopen(filename, mode="rt", encoding="utf-8", errors="replace") as f:
                 cif_string: str = cast("str", f.read())
-        elif isinstance(filename, TextIOWrapper):
-            warnings.warn(
-                "Initializing CifParser from TextIOWrapper is deprecated, use str or Path instead.",
-                DeprecationWarning,
-                stacklevel=2,
-            )
-            cif_string = filename.read()
         elif isinstance(filename, StringIO):
             warnings.warn(
                 "Initializing CifParser from StringIO is deprecated, use `from_str()` instead.",

tests/io/test_cif.py

@@ -170,6 +170,16 @@ def test_cif_parser(self):
         for struct in parser.parse_structures():
             assert struct.formula == "V4 O6"
 
+        # Test init from StringIO
+        with open(f"{TEST_FILES_DIR}/cif/V2O3.cif", encoding="utf-8") as f:
+            cif_text = f.read()
+
+        with pytest.warns(DeprecationWarning, match="Initializing CifParser from StringIO"):
+            parser = CifParser(StringIO(cif_text))
+
+        for struct in parser.parse_structures():
+            assert struct.formula == "V4 O6"
+
         # Test init from TextIOWrapper
         with (
             pytest.warns(DeprecationWarning, match="Initializing CifParser from TextIOWrapper"),