Python - pandas - selecting & groupby

import pandas as pd

df = pd.DataFrame({
    'type':['coupe', 'combi', 'coupe', 'combi', 'coupe', 'combi'],
    'rating':['A', 'A', 'B', 'B', 'A', 'C']
})

# --- selection ---

new_df = df[ (df['type'] == 'coupe') & (df['rating'] == 'A') ]

print(new_df)
print('rows number:', new_df.shape[0])
print('rows number:', len(new_df))

# --- groups ---

groups = df.groupby(['type', 'rating'])

for values, data in groups:
    print('---')
    if values == ('coupe', 'A'):
        print('*** My Favorite ***')
    print('values:', values)
    print('data:\n', data)
    print('rows:', len(data))