Python 3中的Lambda排序

numbers = [5, 2, 9, 1, 5, 6]
sorted_numbers = sorted(numbers, key=lambda x: x)
print(sorted_numbers)  # 输出: [1, 2, 5, 5, 6, 9]

words = ['apple', 'banana', 'cherry', 'date']
sorted_words = sorted(words, key=lambda word: len(word))
print(sorted_words)  # 输出: ['date', 'apple', 'banana', 'cherry']

class Person:
    def __init__(self, name, age):
        self.name = name
        self.age = age

people = [
    Person('Alice', 30),
    Person('Bob', 25),
    Person('Charlie', 35)
]

sorted_people = sorted(people, key=lambda person: person.age)
for person in sorted_people:
    print(f"{person.name}, {person.age}")  # 输出按年龄排序的人名和年龄

people_with_age_key = [(person.age, person) for person in people]
sorted_people = [person for age, person in sorted(people_with_age_key)]