Python delattr()

delattr()函數將一個對象作為參數，並從該對象中移除一個屬性。

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

delattr()參數:

該函數將一個對象作為參數，要刪除的屬性可以作為可選參數傳遞。

延遲()返回值

delattr()函數不返回任何內容。它只從對象中移除屬性

Python 中delattr()方法的示例

示例 1:從對象中移除屬性

 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 

輸出:

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) 

輸出:

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