如何根据python中pandas数据框中的列按降序进行分组？(Jupyter Notebook)

import pandas as pd

data = {'Name': ['Alice', 'Bob', 'Charlie', 'David', 'Eve'],
        'Age': [25, 30, 35, 40, 45],
        'Salary': [5000, 6000, 7000, 8000, 9000]}
df = pd.DataFrame(data)

sorted_df = df.sort_values('Salary', ascending=False)

grouped_df = sorted_df.groupby('Age')

import pandas as pd

data = {'Name': ['Alice', 'Bob', 'Charlie', 'David', 'Eve'],
        'Age': [25, 30, 35, 40, 45],
        'Salary': [5000, 6000, 7000, 8000, 9000]}
df = pd.DataFrame(data)

sorted_df = df.sort_values('Salary', ascending=False)
grouped_df = sorted_df.groupby('Age')