fixed groupby

app.py

@@ -150,7 +150,7 @@ def bench_filter(df: pd.DataFrame, repeats=3):
 
 def bench_groupby(df: pd.DataFrame, repeats=3):
     def p_op():
-        _ = df.group_by("category")[["value1", "value2"]].mean()
+        _ = df.groupby("category")[["value1", "value2"]].mean()
 
     p_stats = time_function(p_op, repeats)