fix style

tests/conftest.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 import uuid
-from typing import Literal, Dict, Any
+from typing import Literal, Any
 
 import pandas as pd
 import pyarrow as pa
@@ -183,7 +183,8 @@ def assert_df_equals(
             print(f"Failed assertion for col: {col}")
             raise
 
-def check_answer(df: daft.DataFrame, expected_answer: Dict[str, Any], is_sorted: bool = False):
+
+def check_answer(df: daft.DataFrame, expected_answer: dict[str, Any], is_sorted: bool = False):
     daft_df = df.to_pandas()
     expected_df = daft.from_pydict(expected_answer).to_pandas()
     # when this is an empty result, no need to check data types.

tests/dataframe/test_set_ops.py

@@ -1,18 +1,18 @@
 from __future__ import annotations
 
-from typing import Any, Dict
+from typing import Any
 
 import daft
 from daft import col, DataFrame
 import pytest
 from tests.conftest import check_answer
 
-def helper(make_df, op: str, left: Dict[str, Any], right: Dict[str, Any], expected: Dict[str, Any]):
+def helper(make_df, op: str, left: dict[str, Any], right: dict[str, Any], expected: dict[str, Any]):
     df1 = make_df(left)
     df2 = make_df(right)
     df_helper(op, df1, df2, expected)
 
-def df_helper(op: str, df1: DataFrame, df2: DataFrame, expected: Dict[str, Any]):
+def df_helper(op: str, df1: DataFrame, df2: DataFrame, expected: dict[str, Any]):
     if op == "intersect":
         result = df1.intersect(df2)
     elif op == "except_distinct":