Dear Sir,
While I execute the codes, it responsed the error as attached. I dont know where the error is.
Course: Learn Object-Oriented Programming in Python - Learn Interactively
Lesson: Solution Review 3: Implement a Calculator Class - Learn Object-Oriented Programming in Python
My name is Shahrukh Naeem. I hope everything is going well with you. Thank you for reaching out about this. I will try my best to answer your query!
I haven’t faced any errors on my side. I think you missed something, try the following complete code and hopefully, you will not face any errors:
class Calculator:
def __init__(self, num1, num2):
self.num1 = num1
self.num2 = num2
def add(self):
return (self.num2 + self.num1)
def subtract(self):
return (self.num2 - self.num1)
def multiply(self):
return (self.num2 * self.num1)
def divide(self):
return (self.num2 / self.num1)
demo1 = Calculator(10, 94)
print("Addition:", demo1.add())
print("Subtraction:", demo1.subtract())
print("Mutliplication:", demo1.multiply())
print("Division:", demo1.divide())
For reference, I have attached the screenshot here:
I hope that this guide is helpful. Remember that I am always available via message to help you with any difficulty you might encounter.
Regards,
Happy Learning 
