Python delattr()函数

Python delattr()函数用于从类中删除属性。它有两个参数，第一个是我们要删除的类对象，第二个是我们要删除的属性的名称。

句法

delattr (object, name)  

参数

Parameter	Description
object	An object from which we want to delete the attribute
name	The name of the attribute we want to delete

delattr() 方法返回一个复数。

示例 1：

使用属性名称、持续时间、价格、评级创建课程。创建了一个类的实例，现在我们使用 delattr() 方法删除rating属性。最后，我们检查rating属性是否存在。一个 try 块用于处理 keyError

Python3

class course:
    name = "data structures using c++"
    duration_months = 6
    price = 20000
    rating = 5
 
# creating an object of course
print(course.rating)
 
# deleting the rating attribute from object
delattr(course, 'rating')
 
# checking if the rating attribute is there or not
try:
    print(course.rating)
except Exception as e:
    print(e)

输出

5
type object 'course' has no attribute 'rating'

示例 2：

使用属性名称、持续时间、价格、评级创建课程。创建了一个类的实例，现在我们使用 delattr() 方法删除价格属性。最后，我们检查价格属性是否存在。一个 try 块用于处理 keyError

Python3

class course:
    name = "data structures using c++"
    duration_months = 6
    price = 20000
    rating = 5
 
 
# creating an object of course
print(course.price)
 
# deleting the price attribute from object
delattr(course, 'price')
 
# checking if the price attribute is there or not
try:
    print(course.price)
except Exception as e:
    print(e)

输出

20000
type object 'course' has no attribute 'price'