In simple calculator code at point where two userinput no are being added and stored in result 'str' is added before (a+b).WHY?

Question

in the control structure lesson,in the simple calculator program, where the two user inputs are being added the code is
( elif user_input == "add":
num1 = float(input("Enter a number: "))
num2 = float(input("Enter another number: "))
result = str(num1 + num2)
print("The answer is " + result)

why is there str in
result = str(num1 + num2)
what is the reason?

Answer 1

cause u r converting floats to string so u can add the string "the answer is" + result, u can do that without the str too like this result = num1+num2
print("The answer is", result) with a , instead of +

Answer 2

thank you so much