[파이썬 객체지향] 계산기 예제

class Calculator:
    num1 : int
    num2 : int
    opcode : str
 
    @property
    def num1(self) -> int: return self._num1
    @num1.setter
    def num1(self, num1): self._num1 = num1
    @property
    def num2(self) -> int: return self._num2
    @num2.setter
    def num2(self, num2): self._num2 = num2
    @property
    def opcode(self) -> int: return self._opcode
    @opcode.setter
    def opcode(self, opcode): self._opcode = opcode
 
def add(this): return this.num1 + this.num2
def subtract(this): return this.num1 - this.num2
def multiply(this): return this.num1 * this.num2
def divide(this): return this.num1 / this.num2
def calculate(this):
    if this.opcode == '+':
        result = add(this)
    if this.opcode == '-':
        result = subtract(this)
    if this.opcode == '*':
        result = multiply(this)
    if this.opcode == '/':
        result = divide(this)
    return result
 
if __name__ == '__main__':
    this = Calculator()
    this.num1 = int(input('첫번째 수 \n'))
    this.opcode = input('연산자 \n')
    this.num2 = int(input('두번째 수 \n'))
 
    result = calculate(this)
    print(f'{this.num1} {this.opcode} {this.num2} = {result}')