delattr() 删除对象属性

内置函数 delattr()，Python 官方文档描述如下：

help(delattr)

Help on built-in function delattr in module builtins:

delattr(obj, name, /)
    Deletes the named attribute from the given object.
    
    delattr(x, 'y') is equivalent to ``del x.y''

实参是一个对象和一个字符串。该字符串必须是对象的某个属性。如果对象允许，该函数将删除指定的属性。delattr(x, 'y') 等价于 del x.y。

class A:
    y = 0

x = A
x.y

0

delattr(x,'y')

x.y

---------------------------------------------------------------------------

AttributeError                            Traceback (most recent call last)

<ipython-input-12-3552434a3e61> in <module>
----> 1 x.y


AttributeError: type object 'A' has no attribute 'y'