Create a New Python Class Math1

Create a new class Math1 in Python

Create a New Python Class Math1

  • Create a new class Math1
  • Create a Constructor for Math1 class
  • Define two instance varables num1, num2
  • Write a method add(self) to add the numbers and return sum
  • Create two objects obj1 and obj2, passing 10,20 and 40,60 values
  • Call add() method with object1
  • Call add() method with object 2

Create a New Class Math1 in Python

How To Create A Class Math1 to Add Two Numbers

Create a New Python Class Math1 With Constructor and Methods

  1. First of all we will dfine a class Math1 using 'class' keyword.
  2. Define a construcor that is __init__() method to initialize newly created objects.
  3. We will define two instance variables num1, num2 in the __init__() method.
  4. Three parameters are used in __init__(self, num1, num2)
  5. 'self' refers to the current object upon which the __init__() method is called.
  6. num1 and num2 are the instance variables of Math1 class.
  7. We will assign the values of parameters to the instance variables, so that both of the instance variables are initialized at the time of object creation (AKA instanitiation).
  8. Similarly, define another method add(self) to return the sum of the two instance variables.
  9. Now, the class code is ended here, now add some statements to main() at zero indentation level.
  10. Add the statements to create two objects, obj1 and obj2 with values 10,20 and 40,60 respectively.
  11. Call the add() method for the newly created objects of Math1 class.
  12. Hence the output of the program will display on the screen

Coding of the Program Math1 Class

# Create a class Math1
# Math1 class has two instance variables num1, num2
# defined in the constructor that is __init__() method
# class Math1 uses __init__() constructor to intialize two instance variables
# Math1 class has one method called add() to return sum of the two
# instance variables num1, num2

# author: www.EasyCodeBook.com    (c)

class Math1:
    def __init__(self, num1, num2):
        self.num1 = num1
        self.num2 = num2
        
    def add(self):
        return self.num1 +  self.num2

obj1 =  Math1(10,20)

sum1 = obj1.add()

print('Sum1 =' , sum1)

obj2 =  Math1(40,60)

sum2 = obj2.add()

print('Sum2 =' , sum2)

Output:

Sum1 = 30
Sum2 = 100

Python Program  with comments

 

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# Create a class Math1
# Math1 class has two instance variables num1, num2
# defined in the constructor that is __init__() method
# class Math1 uses __init__() constructor to intialize two instance variables
# Math1 class has one method called add() to return sum of the two
# instance variables num1, num2


# author: www.EasyCodeBook.com    (c)


# write a class definition

class Math1:
    # define constructor with three parameters self, num1, num2
    # the constructor will initialize the instance variables
    # using 'self' keyword in Python is like using 'this' keyword in Java
    # 'self'  refers to current objet
    
    def __init__(self, num1, num2):
        self.num1 = num1
        self.num2 = num2

     # define a method add() with the parameter 'self'
     # add() method will retun sum of the two instance variables
     # for current object
        
    def add(self):
        return self.num1 +  self.num2

   # end of class Math1

# main
# create first object of class Math1

obj1 =  Math1(10,20)

# call add() method on object obj1
sum1 = obj1.add()

# print the value of sum varable
print('Sum 1=' , sum1)


# create second object of class Math1

obj2 =  Math1(40,60)

# call add() method on object obj2
sum2 = obj2.add()

# print the value of sum varable
print('Sum 2=' , sum2)