创新互联Python教程：Pythondelattr()

delattr()函数将一个对象作为参数，并从该对象中移除一个属性。

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 **delattr(object, name)** #where name is the name of attribute 

delattr()参数:

该函数将一个对象作为参数，要删除的属性可以作为可选参数传递。

参数	描述	必需/可选
一个对象	要从中删除属性的对象	需要
属性	要移除的属性的名称	可选择的

延迟()返回值

delattr()函数不返回任何内容。它只从对象中移除属性

Python 中delattr()方法的示例

示例 1:从对象中移除属性

 class Student:
name = "Ram" age = 22
course = "Bachelors"
Student1 = Student()
delattr(Student, 'age') #Removing age attribute
print("Student's name is ",Student 1.name) 
print("Student's country is ",Student 1.country)
print("Student's age is ",Student 1.age) # Raises error since age is not found 

输出:

Student's name is John 
Student's country is Norway
AttributeError: 'Student' object has no attribute 'age' 

示例delattr()是如何工作的？

 class Coordinate:
  x = 20
  y = -15
  z = 0

value1 = Coordinate() 

print('x = ',value1.x)
print('y = ',value1.y)
print('z = ',value1.z)

delattr(Coordinate, 'z')

print('--After deleting z attribute--')
print('x = ',value1.x)
print('y = ',value1.y)

# Raises Error
print('z = ',value1.z) 

输出:

x =  20
y =  -15
z =  0
--After deleting z attribute--
x =  20
y =  -15
Traceback (most recent call last):
  File "python", line 19, in AttributeError: 'Coordinate' object has no attribute 'z' 

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