python delattr
时间: 2024-04-22 11:26:24 浏览: 109
`delattr` 是 Python 内置的一个函数,用于删除对象的属性。它接受两个参数,第一个参数是要删除属性的对象,第二个参数是要删除的属性的名称。下面是一个示例:
```python
class Person:
def __init__(self, name, age):
self.name = name
self.age = age
person = Person("Alice", 25)
print(person.name) # 输出:Alice
delattr(person, "name")
print(person.name) # 抛出 AttributeError: 'Person' object has no attribute 'name'
```
在上面的例子中,我们通过 `delattr` 函数删除了 `person` 对象的 `name` 属性。在删除后,再次访问该属性会抛出 AttributeError。
相关问题
python中__delattr__
在Python中,__delattr__是一个魔法方法,用于在清除实例属性时被捕获执行。通过重写__delattr__方法,我们可以在删除属性时添加自定义的逻辑。该方法的语法很简单,其中self是所有实例方法都必须有的第一个参数,属性是要删除的属性的名称。在重写该方法时,如果要实现真正的属性删除,必须调用父类的__delattr__方法,否则相关属性不会被清除。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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python中__delattr__方法
在Python中,__delattr__方法是一个特殊的魔法方法,用于在清除实例属性时被捕获执行。它的主要作用是在删除实例属性时提供自定义的逻辑。该方法的语法如下所示:__delattr__(self, 属性)。其中,self是实例方法的必须参数,属性是一个字符串,表示要删除的属性的名称。当我们重写__delattr__方法时,除了可以添加自己的逻辑外,还必须调用父类的__delattr__方法以确保相关属性被真正删除。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
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