Update app.py

app.py

@@ -23,6 +23,7 @@ import inflect
 from matplotlib.pyplot import text
 import rolling_batter_functions as rbf
 import joblib
+import polars as pl
 
 in_zone_model = joblib.load('joblib_model/in_zone_model_knn_20240410.joblib')
 px_model = joblib.load('joblib_model/linear_reg_model_x.joblib')
@@ -74,7 +75,7 @@ exit_velo_df_a = pl.read_parquet(f"hf://datasets/TJStatsApps/mlb_data/data/lo_a_
 #print(df_2023)
 exit_velo_df_a['level'] = 'A'
 
-exit_velo_df = pl.concat([exit_velo_df_mlb,exit_velo_df_aaa,exit_velo_df_aa,exit_velo_df_ha,exit_velo_df_a])
+exit_velo_df = pd.concat([exit_velo_df_mlb,exit_velo_df_aaa,exit_velo_df_aa,exit_velo_df_ha,exit_velo_df_a])
 # exit_velo_df = pd.concat([exit_velo_df_mlb,exit_velo_df_aaa])
 # exit_velo_df_copy = exit_velo_df.copy()