Python - built-in functions - s

# set()
# setattr()
# slice()
# sorted()
# staticmethod()
# str()
# sum()
# super()

# set() 函数示例
fruits = ['apple', 'banana', 'cherry', 'apple', 'banana']
unique_fruits = set(fruits)
print(unique_fruits)  # 输出: {'cherry', 'apple', 'banana'}


# setattr() 函数示例
class Person:
    pass


person = Person()
setattr(person, 'name', 'lfsun')
print(person.name)  # 输出: lfsun

# slice() 函数示例:slice(): slice() 函数用于创建切片对象。它接受三个参数：起始索引、结束索引和步长。
# 使用 slice() 函数可以创建一个可重复使用的切片对象，然后将其应用于序列（如列表、字符串等）以获取指定的切片。
numbers = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
sliced_numbers = numbers[slice(2, 7, 2)]
print(sliced_numbers)  # 输出: [2, 4, 6]

# sorted() 函数示例
numbers = [5, 2, 8, 1, 6]
sorted_numbers = sorted(numbers)
print(sorted_numbers)  # 输出: [1, 2, 5, 6, 8]


# staticmethod() 函数示例
class MathUtils:
    @staticmethod
    def add(x, y):
        return x + y


result = MathUtils.add(2, 3)
print(result)  # 输出: 5

# str() 函数示例
number = 42
number_str = str(number)
print(number_str)  # 输出: '42'

# sum() 函数示例
numbers = [1, 2, 3, 4, 5]
total = sum(numbers)
print(total)  # 输出: 15


# super() 函数示例
class Parent:
    def __init__(self):
        self.name = 'John'


class Child(Parent):
    def __init__(self):
        super().__init__()


child = Child()
print(child.name)  # 输出: John