Why's there an error

Abdulrahman alturk , just allow me a comment. the second line (that is used for an operator sign): equation_type = str(input()) does not require the str() function, since all inputs in python are strings by default. so we can just use: equation_type = input()

Artena , => “Solve “ is not Not defined ٫ You must define it in advance so that the answer can be stored in it and then displayed. the above statement is not quite correct for python. the code works correctly if the line: solve=0 is removed or is commented out.

+ is not a string. "+" is a string. same goes for the other operators in the comparisons.

Guys ok i get it thanks guys

still no difference

Thanks 😊

a = float(input()) equation_type = str(input()) b = float(input()) solve=0 #or you can save it in a list (solve=0) if equation_type == '+' : solve = a+b elif equation_type == '-' : solve = a-b elif equation_type == '*' : solve = a*b elif equation_type == '/' : solve = a/b elif equation_type == '^' : solve = a**b print() print() print("_____________________________________") print("the answer is equal to" + " " + str(solve)) “Solve “ is not Not defined ٫ You must define it in advance so that the answer can be stored in it and then displayed. Line 4 And in this program you should write like this For example: 2 + 2 And it will give you the answer

Take all the input in one line. Like this : a, equation_type, b = input("Enter a operator b: ").split() a = float(a) b = float(b) # There will be no error now

Use two = symbols in if statements. By the way if you wanna get advanced in python then you should try making a complex project like (this code is totally not fake) https://sololearn.com/compiler-playground/c6l8CNwt0gTZ/?ref=app

Use this method def addition(x, y): return x + y def soustraction(x, y): return x - y def multiplication(x, y): return x * y def division(x, y): if y == 0: return "Erreur : Division par zéro !" return x / y def calculatrice(): print("Calculatrice simple") print("1. Addition") print("2. Soustraction") print("3. Multiplication") print("4. Division") print("5. Quitter") while True: choix = input("Choisissez une option : ") if choix == "1": x = float(input("Entrez le premier nombre : ")) y = float(input("Entrez le deuxième nombre : ")) print(f"{x} + {y} = {addition(x, y)}") elif choix == "2": x = float(input("Entrez le premier nombre : ")) y = float(input("Entrez le deuxième nombre : ")) print(f"{x} - {y} = {soustraction(x, y)}") elif choix == "3": x = float(input("Entrez le premier nombre : "))

This is not java, there's no need to make extra boilerplate "methods"