Python中的sort方法详解

list.sort(key=None, reverse=False)

numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5]
numbers.sort()
print(numbers)

[1, 1, 2, 3, 4, 5, 5, 6, 9]

numbers = [3, 1, 4, 1, 5, 9, 2, 6, 5]
numbers.sort(reverse=True)
print(numbers)

[9, 6, 5, 5, 4, 3, 2, 1, 1]

fruits = ['apple', 'banana', 'cherry', 'durian']
fruits.sort(key=len)
print(fruits)

['apple', 'durian', 'cherry', 'banana']

fruits = ['apple', 'banana', 'cherry', 'durian']
fruits.sort(key=lambda x: x[::-1])
print(fruits)

['banana', 'cherry', 'durian', 'apple']

students = [
    {'name': 'Alice', 'age': 20},
    {'name': 'Bob', 'age': 18},
    {'name': 'Charlie', 'age': 22}
]
students.sort(key=lambda x: x['age'])
print(students)

[{'name': 'Bob', 'age': 18}, {'name': 'Alice', 'age': 20}, {'name': 'Charlie', 'age': 22}]