Python 복습 6일차 기록

''' 클래스 '''
class Calculator:

    def __init__(self):
        self.result = 0

    def add(self,num):
        self.result += num
        return self.result

cal = Calculator()
print(cal.add(3))
print(Calculator().add(3))

class FourCal:

    def setdata(self,first,second):         # 변수를 저장하기 위해서 setdata를 사용한다.
        self.first = first
        self.second = second
    def add(self):
        result = self.first + self.second
        return result
    def sub(self):
        result = self.first - self.second
        return result
    def mul(self):
        result = self.first * self.second
        return result
    def div(self):
        result = self.first / self.second
        return result

a = FourCal()
b = FourCal()
a.setdata(4,2)
b.setdata(2,5)
print(a.add())
print(a.sub())
print(a.mul())
print(a.div())
print(b.add())
print(b.sub())
print(b.mul())
print(b.div())

''' 생성자 '''

class FourCal:

    def __init__(self,first,second):        # 변수를 저장하기 위해서 __init__(생성자)를 사용한다.
        self.first = first
        self.second = second

    def add(self):
        result = self.first + self.second
        return result
    def sub(self):
        result = self.first - self.second
        return result
    def mul(self):
        result = self.first * self.second
        return result
    def div(self):
        result = self.first / self.second
        return result

a=FourCal(4,2)
print(a.add())
print(a.sub())
print(a.mul())
print(a.div())

''' 클래스 상속 '''
class FourCal:

    def __init__(self,first,second):        
        self.first = first
        self.second = second

    def add(self):
        result = self.first + self.second
        return result
    def sub(self):
        result = self.first - self.second
        return result
    def mul(self):
        result = self.first * self.second
        return result
    def div(self):
        result = self.first / self.second
        return result

a=FourCal(4,2)
print(a.add())
print(a.sub())
print(a.mul())
print(a.div())

class MoreFourCal(FourCal):                 # 상속은 기존 클래스에서 기능을 확장할 때 사용한다.
    def pow(self):
        result = self.first ** self.second
        return result
a=MoreFourCal(4,2)
print(a.add())
print(a.mul())
print(a.sub())
print(a.div())
print(a.pow())