Add old typing

app.py

@@ -1,4 +1,5 @@
 import re
+from typing import Dict, List
 
 from datasets import load_dataset
 import pandas as pd
@@ -11,7 +12,7 @@ from unidecode import unidecode
 DATA_SPLITS = ["train", "validation", "test"]
 
 
-def load_data() -> dict[str, pd.DataFrame]:
+def load_data() -> Dict[str, pd.DataFrame]:
     return {
         data: pd.read_csv(f"data/{data}.csv").rename(
             {"label": "target"}, axis="columns"
@@ -20,7 +21,7 @@ def load_data() -> dict[str, pd.DataFrame]:
     }
 
 
-def flatten_list(main_list: list[list]) -> list:
+def flatten_list(main_list: List[List]) -> List:
     return [item for sublist in main_list for item in sublist]