Hướng dẫn can you have classes in classes in python? - bạn có thể có các lớp học trong các lớp học trong python không?

Python là ngôn ngữ lập trình hướng đối tượng, mọi thứ trong Python đều liên quan đến các đối tượng, phương thức và thuộc tính. Một lớp là bản thiết kế do người dùng xác định hoặc nguyên mẫu mà chúng ta có thể sử dụng để tạo các đối tượng của một lớp. Lớp được xác định bằng cách sử dụng từ khóa lớp.is an Object-Oriented Programming Language, everything in python is related to objects, methods, and properties. A class is a user-defined blueprint or a prototype, which we can use to create the objects of a class. The class is defined by using the class keyword.

Ví dụ về lớp học

Python3

class Geeksforgeeks :

   gfg __

Name: Green
Name: Light Green
Code: 024avc
0

Trước hết, chúng ta phải hiểu phương pháp tích hợp __init __ () để hiểu ý nghĩa của các lớp. Bất cứ khi nào lớp được bắt đầu, một phương thức là __init __ () luôn được thực thi. Phương thức __init __ () được sử dụng để gán các giá trị cho các thuộc tính đối tượng hoặc để thực hiện phương thức khác cần thiết để hoàn thành khi đối tượng được tạo.

Ví dụ: Lớp có phương thức __init __ ()class with __init__() method

Python3

class

Name: Green
Name: Light Green
Code: 024avc
2

Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
8=
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
0

Name: Green
Name: Light Green
Code: 024avc
5
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
22____9
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
4

Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
1
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
4

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
7
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5
This is an outer class

This is the inner class

This is an inner class of inner class
0

This is an outer class

This is the inner class

This is an inner class of inner class
1=
This is an outer class

This is the inner class

This is an inner class of inner class
3

This is an outer class

This is the inner class

This is an inner class of inner class
4

Output:

Course : Campus Preparation
Duration : As per your schedule 

Lớp bên trong ở Python

Một lớp được xác định trong một lớp khác được gọi là lớp bên trong hoặc lớp lồng nhau. Nếu một đối tượng được tạo bằng cách sử dụng lớp bên trong lớp con thì đối tượng cũng có thể được sử dụng bởi lớp cha hoặc lớp gốc. Một lớp cha có thể có một hoặc nhiều lớp bên trong nhưng nhìn chung các lớp bên trong được tránh.inner class or nested class. If an object is created using child class means inner class then the object can also be used by parent class or root class. A parent class can have one or more inner classes but generally inner classes are avoided.

Chúng ta có thể làm cho mã của chúng ta trở nên định hướng đối tượng hơn bằng cách sử dụng một lớp bên trong. Một đối tượng duy nhất của lớp có thể chứa nhiều đối tượng phụ. Chúng tôi có thể sử dụng nhiều đối tượng phụ để cung cấp một cấu trúc tốt cho chương trình của chúng tôi.

Example:

  • Đầu tiên, chúng tôi tạo một lớp và sau đó là hàm tạo của lớp.
  • Sau khi tạo một lớp, chúng tôi sẽ tạo một lớp khác trong lớp đó, lớp bên trong một lớp khác sẽ được gọi là lớp bên trong.

Python3

class

This is an outer class

This is the inner class

This is an inner class of inner class
6

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

Name: Green
Name: Light Green
Code: 024avc
5class4= class6

class2

Name: Green
Name: Light Green
Code: 024avc
5class9____9
Name: Green
Name: Light Green
Code: 024avc
5Geeksforgeeks :2

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0   1
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5   4

class    6

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

Name: Green
Name: Light Green
Code: 024avc
5class4= class6

class2

Name: Green
Name: Light Green
Code: 024avc
5class9____9
Name: Green
Name: Light Green
Code: 024avc
5Geeksforgeeks :2

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0   1
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5   4

class    6

class2

Name: Green
Name: Light Green
Code: 024avc
5class4= gfg 6

This is an outer class

This is the inner class

This is an inner class of inner class
4

class2

Name: Green
Name: Light Green
Code: 024avc
5gfg 9____9 =1

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3 =4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Output:

Name: Green
Name: Light Green
Code: 024avc

class2# create NameOfOuterClass class class NameOfOuterClass: # Constructor method of outer class def __init__(self): self.NameOfVariable = Value # create Inner class object self.NameOfInnerClassObject = self.NameOfInnerClass() # create a NameOfInnerClass class class NameOfInnerClass: # Constructor method of inner class def __init__(self): self.NameOfVariable = Value # create object of outer class outer = NameOfOuterClass() 9 In outer class Name: Doctor Name: Dr. Savita Degree: BDS Name: Dr. Amit Degree: DM 0Name: Green Name: Light Green Code: 024avc07In outer class Name: Doctor Name: Dr. Savita Degree: BDS Name: Dr. Amit Degree: DM 2Name: Green Name: Light Green Code: 024avc5Name: Green Name: Light Green Code: 024avc10

This is an outer class

This is the inner class

This is an inner class of inner class
7
This is an outer class

This is the inner class

This is an inner class of inner class
1=
Name: Green
Name: Light Green
Code: 024avc
14

Syntax:

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 

Name: Green
Name: Light Green
Code: 024avc
16=
Name: Green
Name: Light Green
Code: 024avc
18 

  1. Name: Green
    Name: Light Green
    Code: 024avc
    19
  2. Tại sao lớp bên trong?

Name: Green Name: Light Green Code: 024avc19

Tại sao lớp bên trong?

Cho nhóm hai hoặc nhiều lớp. Giả sử chúng ta có hai lớp từ xa và pin. Mỗi điều khiển từ xa đều cần một pin nhưng pin không có won từ xa được sử dụng. Vì vậy, chúng tôi làm cho pin trở thành một lớp bên trong đến điều khiển từ xa. Nó giúp chúng tôi lưu mã. Với sự giúp đỡ của lớp bên trong hoặc lớp lồng nhau, chúng ta có thể che giấu lớp bên trong khỏi thế giới bên ngoài. Do đó, ẩn mã là một tính năng tốt khác của lớp bên trong. Bằng cách sử dụng lớp bên trong, chúng ta có thể dễ dàng hiểu các lớp vì các lớp có liên quan chặt chẽ. Chúng tôi không cần phải tìm kiếm các lớp trong toàn bộ mã, tất cả đều gần như cùng nhau. Mặc dù các lớp bên trong hoặc lồng nhau không được sử dụng rộng rãi trong Python, nhưng nó sẽ là một tính năng tốt hơn để thực hiện mã vì việc tổ chức khi chúng ta sử dụng lớp bên trong hoặc lớp lồng nhau.Multiple inner class

Python3

Các loại lớp bên trong như sau: & nbsp;

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

Name: Green
Name: Light Green
Code: 024avc
5class4= class6

class2

Name: Green
Name: Light Green
Code: 024avc
5class9____9
Name: Green
Name: Light Green
Code: 024avc
5Geeksforgeeks :2

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
Name: Green
Name: Light Green
Code: 024avc
52
Name: Green
Name: Light Green
Code: 024avc
53

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0   1
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5   4

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0   1
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5   4

class    6

class2

Name: Green
Name: Light Green
Code: 024avc
5class4= gfg 6

class2

Name: Green
Name: Light Green
Code: 024avc
5gfg 9____9 =1

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3 =4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
Name: Green
Name: Light Green
Code: 024avc
07
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
10

Name: Green
Name: Light Green
Code: 024avc
69
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
Name: Green
Name: Light Green
Code: 024avc
94
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
97

This is an outer class

This is the inner class

This is an inner class of inner class
7class
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
00

class2

Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Name: Green
Name: Light Green
Code: 024avc
69
Name: Green
Name: Light Green
Code: 024avc
5class4=
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
10

Name: Green
Name: Light Green
Code: 024avc
69
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
76=
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
15

class2

Name: Green
Name: Light Green
Code: 024avc
3 =4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Name: Green
Name: Light Green
Code: 024avc
69
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
Name: Green
Name: Light Green
Code: 024avc
87
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5   4

Name: Green
Name: Light Green
Code: 024avc
69
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
Name: Green
Name: Light Green
Code: 024avc
94
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
2
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
97

This is an outer class

This is the inner class

This is an inner class of inner class
1=
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
37

This is an outer class

This is the inner class

This is an inner class of inner class
4

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
39__
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
41

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
42=
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
44

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
46

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
47

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
46

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
50

Đầu ra

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM

Lớp nội địa đa cấp

Lớp chứa một lớp bên trong và lớp bên trong đó một lần nữa chứa một lớp bên trong khác, hệ thống phân cấp này được gọi là lớp bên trong đa cấp.

Ví dụ: Lớp bên trong đa cấpMultilevel inner class

Python3

class

Name: Green
Name: Light Green
Code: 024avc
2

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

Name: Green
Name: Light Green
Code: 024avc
5
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
60____9
Name: Green
Name: Light Green
Code: 024avc
5
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
63

This is an outer class

This is the inner class

This is an inner class of inner class
7
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

class2

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
72
Name: Green
Name: Light Green
Code: 024avc
53

This is an outer class

This is the inner class

This is an inner class of inner class
7class
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
76

class2

Name: Green
Name: Light Green
Code: 024avc
3
Name: Green
Name: Light Green
Code: 024avc
4
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Name: Green
Name: Light Green
Code: 024avc
69
Name: Green
Name: Light Green
Code: 024avc
5
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
84=
Name: Green
Name: Light Green
Code: 024avc
5
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
87

class2

Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

Name: Green
Name: Light Green
Code: 024avc
69
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
96
Name: Green
Name: Light Green
Code: 024avc
53

class2class

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
00

Name: Green
Name: Light Green
Code: 024avc
69
Name: Green
Name: Light Green
Code: 024avc
3
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
6
Name: Green
Name: Light Green
Code: 024avc
5
Name: Green
Name: Light Green
Code: 024avc
6

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
06
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
0
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
09
Name: Green
Name: Light Green
Code: 024avc
53

This is an outer class

This is the inner class

This is an inner class of inner class
1=
This is an outer class

This is the inner class

This is an inner class of inner class
3

This is an outer class

This is the inner class

This is an inner class of inner class
4

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
46

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
17=
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
19

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
20

# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
9
# create NameOfOuterClass class
class NameOfOuterClass:

  # Constructor method of outer class
  def __init__(self):  

    self.NameOfVariable = Value

    # create Inner class object
    self.NameOfInnerClassObject = self.NameOfInnerClass() 
 
  # create a NameOfInnerClass class
  class NameOfInnerClass:  
     # Constructor method of inner class
    def __init__(self): 
      self.NameOfVariable = Value

# create object of outer class
outer = NameOfOuterClass() 
46

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
23=
In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
25

In outer class
Name: Doctor

Name: Dr. Savita
Degree: BDS

Name: Dr. Amit
Degree: DM
26

Đầu ra

This is an outer class

This is the inner class

This is an inner class of inner class


Tôi có thể tạo một lớp bên trong một lớp không?

Ngôn ngữ lập trình Java cho phép bạn xác định một lớp trong một lớp khác.Một lớp như vậy được gọi là một lớp lồng nhau và được minh họa ở đây: lớp Outer lớp {... lớp NestedClass {...}}}. Such a class is called a nested class and is illustrated here: class OuterClass { ... class NestedClass { ... } }

Bạn có thể có các lớp học trong Python không?

Các lớp bên trong (lồng nhau) trong Python là gì?Có lẽ bạn đã quen thuộc với lập trình hướng đối tượng và khái niệm về một lớp Python.Giống như bạn có thể tạo một hàm trong một hàm, trong Python, bạn có thể tạo một lớp bên trong một lớp.

Chúng ta có thể tạo các đối tượng bên trong lớp trong Python không?

Tất cả mọi thứ trong Python là một đối tượng, vì vậy có, đây là thông lệ.Bạn không thể tạo một chương trình Python có ý nghĩa mà không tạo ra các trường hợp khác trong các lớp học của riêng bạn.