Python内置函数之staticmethod函数使用及说明

class MyClass:
    @staticmethod
    def static_method(arg1, arg2):
        # 静态方法实现
        return arg1 + arg2

# 方式1：通过类直接调用（推荐）
result = MyClass.static_method(1, 2)

# 方式2：通过实例调用（不推荐，但允许）
obj = MyClass()
result = obj.static_method(1, 2)

class StringUtils:
    @staticmethod
    def is_palindrome(s: str) -> bool:
        """检查字符串是否为回文"""
        s = s.lower().replace(" ", "")
        return s == s[::-1]
    
    @staticmethod
    def capitalize_words(s: str) -> str:
        """将每个单词首字母大写"""
        return " ".join(word.capitalize() for word in s.split())

# 使用示例
print(StringUtils.is_palindrome("Madam"))  # 输出: True
print(StringUtils.capitalize_words("hello world"))  # 输出: Hello World

class Pizza:
    def __init__(self, ingredients):
        self.ingredients = ingredients
    
    @staticmethod
    def create_pepperoni():
        """创建意大利辣香肠披萨"""
        return Pizza(["番茄酱", "奶酪", "辣香肠"])
    
    @staticmethod
    def create_vegetarian():
        """创建素食披萨"""
        return Pizza(["番茄酱", "奶酪", "蘑菇", "青椒", "洋葱"])

# 使用示例
pepperoni = Pizza.create_pepperoni()
vegetarian = Pizza.create_vegetarian()

import math

class Geometry:
    @staticmethod
    def calculate_distance(point1: tuple, point2: tuple) -> float:
        """计算两点之间的欧几里得距离"""
        x1, y1 = point1
        x2, y2 = point2
        return math.sqrt((x2 - x1) ** 2 + (y2 - y1) ** 2)
    
    @classmethod
    def calculate_area_of_circle(cls, radius: float) -> float:
        """计算圆的面积，依赖静态方法"""
        return math.pi * (radius ** 2)

# 使用示例
distance = Geometry.calculate_distance((0, 0), (3, 4))  # 输出: 5.0
area = Geometry.calculate_area_of_circle(5)  # 输出: 78.53981633974483

class FileProcessor:
    @staticmethod
    def validate_file_extension(filename: str) -> bool:
        """验证文件扩展名是否合法"""
        return filename.endswith(('.txt', '.csv', '.json'))
    
    @classmethod
    def process_file(cls, file_path: str):
        """处理文件的主方法"""
        if not cls.validate_file_extension(file_path):
            raise ValueError("不支持的文件格式")
        
        # 处理文件的逻辑
        with open(file_path, 'r') as f:
            return f.read()

class Animal:
    @staticmethod
    def make_sound():
        return "通用声音"

class Dog(Animal):
    @staticmethod
    def make_sound():
        return "汪汪"

# 调用示例
print(Animal.make_sound())  # 输出: 通用声音
print(Dog.make_sound())     # 输出: 汪汪

class staticmethod:
    def __init__(self, func):
        self.func = func
    
    def __get__(self, instance, owner=None):
        return self.func  # 直接返回原始函数，不绑定任何对象