MNT: fix pre-commit

Author: ngoldbaum

pandas/tests/io/formats/test_to_latex.py

@@ -41,15 +41,15 @@ def test_to_latex_to_file_utf8_with_encoding(self):
         df = DataFrame([["au\xdfgangen"]])
         with tm.ensure_clean("test.tex") as path:
             df.to_latex(path, encoding="utf-8")
-            with open(path, "r", encoding="utf-8") as f:
+            with open(path, encoding="utf-8") as f:
                 assert df.to_latex() == f.read()
 
     def test_to_latex_to_file_utf8_without_encoding(self):
         # test with utf-8 without encoding option
         df = DataFrame([["au\xdfgangen"]])
         with tm.ensure_clean("test.tex") as path:
             df.to_latex(path)
-            with open(path, "r", encoding="utf-8") as f:
+            with open(path, encoding="utf-8") as f:
                 assert df.to_latex() == f.read()
 
     def test_to_latex_tabular_with_index(self):

pandas/tests/io/parser/test_quoting.py

@@ -32,6 +32,7 @@
     MSG1 = "a(n)? 1-character string"
     MSG2 = "string( or None)?"
 
+
 @pytest.mark.parametrize(
     "kwargs,msg",
     [

pandas/tests/io/test_common.py

@@ -525,7 +525,7 @@ def test_codecs_encoding(encoding, format):
     with tm.ensure_clean() as path:
         with open(path, mode="w", encoding=encoding) as handle:
             getattr(expected, f"to_{format}")(handle)
-        with open(path, mode="r", encoding=encoding) as handle:
+        with open(path, encoding=encoding) as handle:
             if format == "csv":
                 df = pd.read_csv(handle, index_col=0)
             else:

pandas/tests/reshape/merge/test_merge.py

@@ -2424,11 +2424,16 @@ def test_merge_suffix_raises(suffixes):
 
 TWO_GOT_THREE = "2, got 3" if PY314 else "2"
 
+
 @pytest.mark.parametrize(
     "col1, col2, suffixes, msg",
     [
-        ("a", "a", ("a", "b", "c"), (
-            fr"too many values to unpack \(expected {TWO_GOT_THREE}\)")),
+        (
+            "a",
+            "a",
+            ("a", "b", "c"),
+            (rf"too many values to unpack \(expected {TWO_GOT_THREE}\)"),
+        ),
         ("a", "a", tuple("a"), r"not enough values to unpack \(expected 2, got 1\)"),
     ],
 )

pandas/tests/tools/test_to_datetime.py

@@ -62,8 +62,10 @@
 
 if PY314:
     NOT_99 = ", not 99"
-    DAY_IS_OUT_OF_RANGE = (r"day \d{1,2} must be in range 1\.\.\d{1,2} for "
-                           r"month \d{1,2} in year \d{4}")
+    DAY_IS_OUT_OF_RANGE = (
+        r"day \d{1,2} must be in range 1\.\.\d{1,2} for "
+        r"month \d{1,2} in year \d{4}"
+    )
 else:
     NOT_99 = ""
     DAY_IS_OUT_OF_RANGE = "day is out of range for month"
@@ -1383,7 +1385,7 @@ def test_datetime_invalid_scalar(self, value, format):
                 r'^Given date string "a" not likely a datetime$',
                 r'^unconverted data remains when parsing with format "%H:%M:%S": "9". '
                 f"{PARSING_ERR_MSG}$",
-                fr"^second must be in 0..59{NOT_99}: 00:01:99$",
+                rf"^second must be in 0..59{NOT_99}: 00:01:99$",
             ]
         )
         with pytest.raises(ValueError, match=msg):
@@ -1435,7 +1437,7 @@ def test_datetime_invalid_index(self, values, format):
                 f"{PARSING_ERR_MSG}$",
                 r'^unconverted data remains when parsing with format "%H:%M:%S": "9". '
                 f"{PARSING_ERR_MSG}$",
-                fr"^second must be in 0..59{NOT_99}: 00:01:99$",
+                rf"^second must be in 0..59{NOT_99}: 00:01:99$",
             ]
         )
         with pytest.raises(ValueError, match=msg):