class Animal:(tab)def __init__(self, name):(tab)(tab)self.name = name(tab)def make_sound(self):(tab)(tab)passclass Dog(Animal):(tab)def __init__(self, name):(tab)(tab)super().__init__(name)(tab)def make_sound(self):(tab)(tab)return "Woof!"class Cat(Animal):(tab)def...
1 可以到www.python.org下载安装包,然后通过configure、make、make install进行安装。 2 也可以到www.activestate.com去下载ActivePython组件包。(ActivePython是对Python核心和常用模块的二进制包装,它是ActiveState公司发布的Python开发环境。ActivePython使得Python的安装更加容易,并且可以应用在各种操作系统上。ActivePython包...
classForSelf = Person(color="blue",name="nihao") classForSelf.getUrl() classForSelf.getUr() classForSelf._Person__name = "外部访问" classForSelf.classShow() classForSelf.staticShow() print(isinstance(classForSelf,object)) #动态的增改类的属性 Person.url = "www.coonote.com" classForSe...
@SVMClassdefevaluate(self, X,y):outputs,_=self.predict(X)accuracy = np.sum(outputs == y) / len(y)returnround(accuracy,2) 最后测试我们的完整代码: fromsklearn.datasetsimportmake_classificationimportnumpyasnp# Load the datasetnp.random.seed(1)X, y =...
# 定义数据集X, y = make_classification(n_samples=1000,n_features=2,n_informative=2,n_redundant=0,n_clusters_per_class=1,random_state=4)# 为每个类的样本创建散点图for class_value in range(2):# 获取此类的示例的行索引row_ix = where(y == c...
函数Function 与类 Class Python 中的函数以关键字 def 来定义,例如: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 defsign(x):ifx>0:return'positive'elif x<0:return'negative'else:return'zero'forxin[-1,0,1]:print(sign(x))# Prints"negative","zero","positive" ...
def singleton(cls): """Make a class a Singleton class (only one instance)""" @functools.wraps(cls) def wrapper_singleton(*args, **kwargs): if wrapper_singleton.instance is None: wrapper_singleton.instance = cls(*args, **kwargs) return wrapper_singleton.instance wrapper_singleton.instance ...
class Cat(Animal): def make_sound(self): return "Meow!" # 使用工厂创建动物对象 animal = AnimalFactory.create_animal("dog") print(animal.make_sound()) # 输出: Woof!1.2.2 提高软件质量和可维护性 设计模式鼓励良好的编码习惯,使代码更加灵活、健壮和易于维护。比如,单例模式确保在整个应用程序中只...
1、自动化office，包括对excel、word、ppt、email、pdf等常用办公场景的操作，python都有对应的工具库，...
return f"Name: {self.name}, Employee ID: {self.employee_id}, Department: {self.department}" class ProductionLine: def __init__(self, line_id, department): self.line_id = line_id self.department = department def get_info(self): return f"Line ID: {self.line_id}, Department: {self...