在类中使用getattr: 代码语言:javascript 复制 classMyClass:def__init__(self):self.attribute1="value1"self.attribute2="value2"def__getattr__(self,name):ifname.startswith("custom_"):returnf"Custom attribute '{name}' accessed."raiseAttributeError(f"'{self.__class__.__name__}' object has...
result = getattr(obj, "method")(args) Calling bothgetattrand the method on the same line can make it hard to handle exceptions properly. To avoid confusing AttributeError exceptions raised bygetattrwith similar exceptions raised inside the method, you can use the following pattern: try: func =...
getattr(object, name[, default]) Return the value of the named attribute of object. name must be a string. If the string is the name of one of the object's attributes, the result is the value of that attribute. For example, getattr(x, 'foobar') is equivalent to x.foobar. If the ...
getattr (object, name[, default])是Python的内置函数之一,它的作用是获取对象的属性。 object 对象 name 属性名 default 当属性不存在时,返回的默认值 示例 代码语言:javascript 代码运行次数:0 运行 AI代码解释 >>>classFoo:...def__init__(self,x):...self.x=x...>>>f=Foo(10)>>>getattr(f,'x...
Python对象的属性可以通过obj.__dict__获得,向其中添加删除元素就可以实现python对象属性的动态添加删除的效果,不过我们应该使用更加正规的getattr和setattr来进行这类操作 getattr(object,name[,default]) Return the value of the named attribute ofobject.namemust be a string. If the string is the name of on...
1. getattr(obj,name[,default])：访问对象的属性。2. hasattr(obj,name)：检查是否存在一个属性。3...
getattr hasattr(object, name, default=none) 获取对象中的方法或变量的内存地址 class Person(object): def __init__(self,name): = name def talk(self): print("%s正在交谈"%) p = Person("laowang") n = getattr(p,"name") # 获取name变量的内存地址 ...
内置函数 getattr(),Python 官方文档描述如下: help(getattr) Help on built-in function getattr in module builtins: getattr(...) getattr(object, name[, default]) -> value Get a named attribute from an object; getattr(x, 'y') is equivalent to x.y. When a default argument is given, it...
defaultdict(lambda: 1) # Returns a dict with default value 1. <dict> = dict(<collection>) # Creates a dict from coll. of key-value pairs. <dict> = dict(zip(keys, values)) # Creates a dict from two collections. <dict> = dict.fromkeys(keys [, value]) # Creates a dict from ...
classC:def__init__(self,value,x):self.value=value self.x=xdef__getattr__(self,item):print(f'获取的属性{item}不存在')returnNonedef__getattribute__(self,item):ifitem=='x':print('x属性不允许访问')returnNonereturnsuper().__getattribute__(item)c=C(1,2)print(c.a)print('---')prin...