what i did for my free friday

what i did to day was make a calculator

import math

class AdvancedCalculator:
    OPERATIONS = {
        "+": lambda x, y: x + y,
        "-": lambda x, y: x - y,
        "*": lambda x, y: x * y,
        "/": lambda x, y: x / y if y != 0 else "Error: Division by zero",
        "^": lambda x, y: x ** y,
    }
    
    SCIENTIFIC_OPS = {
        "sin": lambda x: math.sin(math.radians(x)),
        "cos": lambda x: math.cos(math.radians(x)),
        "tan": lambda x: math.tan(math.radians(x)),
        "log": lambda x: math.log10(x) if x > 0 else "Error: Domain",
        "sqrt": lambda x: math.sqrt(x) if x >= 0 else "Error: Negative sqrt",
    }

    def calculate_basic(self, n1, op, n2):
        return self.OPERATIONS.get(op, lambda x, y: "Invalid Op")(n1, n2)

    def calculate_scientific(self, op, n):
        try:
            return self.SCIENTIFIC_OPS.get(op, lambda x: "Invalid Op")(n)
        except Exception:
            return "Error"

    def run(self):
        print("--- Advanced Python Calculator ---")
        print("Basic: +, -, *, /, ^ | Scientific: sin, cos, tan, log, sqrt")
        
        while True:
            choice = input("\nType 's' for scientific, 'b' for basic, or 'q' to quit: ").lower()
            
            if choice == 'q':
                break
            
            try:
                if choice == 'b':
                    n1 = float(input("First number: "))
                    op = input("Operation (+,-,*,/,^): ")
                    n2 = float(input("Second number: "))
                    print(f"Result: {self.calculate_basic(n1, op, n2)}")

                elif choice == 's':
                    op = input("Function (sin, cos, tan, log, sqrt): ")
                    n = float(input("Value: "))
                    print(f"Result: {self.calculate_scientific(op, n)}")
            
            except ValueError:
                print("Invalid input. Please enter numbers only.")

if __name__ == "__main__":
    calc = AdvancedCalculator()
    calc.run()