Sort the Pandas DataFrame by two or more columns

#import python library
import pandas as pd

# dictionary
data_frame = {
       'name': ['Akash Kumar', 'Diksha Tewari',
                'Bhawna Gourh', 'Ayush Sharma'],
        'age': [20, 21, 22, 23],
        'favorite_color': ['black', 'Yellow', 
                           'Pink', "Orange"],
        'grade': [88, 92, 95, 70]
}

# create data frame with indexing
df = pd.DataFrame(data_frame, 
                  index = [1, 2, 3, 4])

# printing the dataframe
df

# sort the dataframe
# based on age and grade
df.sort_values(['age', 'grade'],
              ascending = [False, True])

# sort the dataframe based 
# on name and favorite_colr
df.sort_values(['name', 'favorite_color'], 
               ascending=[True,
                          True])

df.sort_values(["grade", "favorite_color"], 
               axis = 0, ascending = True, 
               inplace = True,
               na_position ='first')

# printing the dataframe
df