We have to define a class that will initiate a number, input a number and print the number in Python.

我们必须定义一个将初始化数字，输入数字并在Python中打印数字的类。

Here, we are defining a class named Number – which has a public variable named num, in the class, there are 3 methods:

在这里，我们定义了一个名为Number的类-它具有一个名为num的公共变量，该类中有3种方法：

1. __init__ :

   __init__ ：

   To initialize the variable, it works as a construction in C++, java.

   要初始化变量，它可以作为C ++，java中的构造。

2. inputNum() :

   inputNum() ：

   This method will ask to the user to input the value.

   该方法将要求用户输入值。

3. printNum() :

   printNum() ：

   This method will print number (

   此方法将打印数字(

   num).

   num )。

Example:

例：

# class definition 
class Number:
	# __init__ method just like a constructor 
	def __init__(self, num):
		self.num = num;
 
	# method to take input from user 
	def inputNum(self):
		self.num = int(input("Enter an integer number: "))
 
	# method to print the number
	def printNum(self):
		print "num:", self.num
 
# main code 
# declare object of the class 'Number'
objN = Number(100);
objN.printNum()
 
# input from user 
objN.inputNum()
objN.printNum()

Output

输出量

num: 100
Enter an integer number: 200
num: 200

翻译自: https://www.includehelp.com/python/simple-program-of-a-class-input-and-print-a-number.aspx