파이썬 클래스 예제 1-7

1. Account 클래스로부터 3개 이상 인스턴스를 생성하고 생성된 인스턴스를 리스트에 저장해보세요.

 

정답확인 -> 

import random


class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        self.deposit_count = 0

        self.name = name
        self.balance = balance
        self.bank = "SC은행"

        # 3-2-6
        num1 = random.randint(0, 999)
        num2 = random.randint(0, 99)
        num3 = random.randint(0, 999999)

        num1 = str(num1).zfill(3)  # 1 -> '1' -> '001'
        num2 = str(num2).zfill(2)  # 1 -> '1' -> '01'
        num3 = str(num3).zfill(6)  # 1 -> '1' -> '0000001'
        self.account_number = num1 + '-' + num2 + '-' + num3  # 001-01-000001
        Account.account_count += 1

    @classmethod
    def get_account_num(cls):
        print(cls.account_count)  # Account.account_count

    def deposit(self, amount):
        if amount >= 1:
            self.balance += amount

            self.deposit_count += 1
            if self.deposit_count % 5 == 0:         # 5, 10, 15
                # 이자 지금
                self.balance = (self.balance * 1.01)


    def withdraw(self, amount):
        if self.balance > amount:
            self.balance -= amount

    def display_info(self):
        print("은행이름: ", self.bank)
        print("예금주: ", self.name)
        print("계좌번호: ", self.account_number)
        print("잔고: ", self.balance)

data = []
k = Account("KIM", 10000000)
l = Account("LEE", 10000)
p = Account("PARK", 10000)

data.append(k)
data.append(l)
data.append(p)

print(data)

 

2. 반복문을 통해 리스트에 있는 객체를 순회하면서 잔고가 100만원 이상인 고객의 정보만 출력하세요.

 

 

정답확인 -> 

import random


class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        self.deposit_count = 0

        self.name = name
        self.balance = balance
        self.bank = "SC은행"

        # 3-2-6
        num1 = random.randint(0, 999)
        num2 = random.randint(0, 99)
        num3 = random.randint(0, 999999)

        num1 = str(num1).zfill(3)  # 1 -> '1' -> '001'
        num2 = str(num2).zfill(2)  # 1 -> '1' -> '01'
        num3 = str(num3).zfill(6)  # 1 -> '1' -> '0000001'
        self.account_number = num1 + '-' + num2 + '-' + num3  # 001-01-000001
        Account.account_count += 1

    @classmethod
    def get_account_num(cls):
        print(cls.account_count)  # Account.account_count

    def deposit(self, amount):
        if amount >= 1:
            self.balance += amount

            self.deposit_count += 1
            if self.deposit_count % 5 == 0:         # 5, 10, 15
                # 이자 지금
                self.balance = (self.balance * 1.01)


    def withdraw(self, amount):
        if self.balance > amount:
            self.balance -= amount

    def display_info(self):
        print("은행이름: ", self.bank)
        print("예금주: ", self.name)
        print("계좌번호: ", self.account_number)
        print("잔고: ", self.balance)

data = []
k = Account("KIM", 10000000)
l = Account("LEE", 10000)
p = Account("PARK", 10000)
data.append(k)
data.append(l)
data.append(p)

for c in data:
    if c.balance >= 1000000:
        c.display_info()

3. 입금과 출금 내역이 기록되도록 코드를 업데이트 하세요. 입금 내역과 출금 내역을 출력하는 deposit_history와 withdraw_history 메서드를 추가하세요.

 

 

정답확인 -> 

import random


class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        self.deposit_count = 0
        self.deposit_log = []
        self.withdraw_log = []

        self.name = name
        self.balance = balance
        self.bank = "SC은행"

        # 3-2-6
        num1 = random.randint(0, 999)
        num2 = random.randint(0, 99)
        num3 = random.randint(0, 999999)

        num1 = str(num1).zfill(3)  # 1 -> '1' -> '001'
        num2 = str(num2).zfill(2)  # 1 -> '1' -> '01'
        num3 = str(num3).zfill(6)  # 1 -> '1' -> '0000001'
        self.account_number = num1 + '-' + num2 + '-' + num3  # 001-01-000001
        Account.account_count += 1

    @classmethod
    def get_account_num(cls):
        print(cls.account_count)  # Account.account_count

    def deposit(self, amount):
        if amount >= 1:
            self.deposit_log.append(amount)
            self.balance += amount

            self.deposit_count += 1
            if self.deposit_count % 5 == 0:         # 5, 10, 15
                # 이자 지금
                self.balance = (self.balance * 1.01)


    def withdraw(self, amount):
        if self.balance > amount:
            self.withdraw_log.append(amount)
            self.balance -= amount

    def display_info(self):
        print("은행이름: ", self.bank)
        print("예금주: ", self.name)
        print("계좌번호: ", self.account_number)
        print("잔고: ", self.balance)

    def withdraw_history(self):
        for amount in self.withdraw_log:
            print(amount)

    def deposit_history(self):
        for amount in self.deposit_log:
            print(amount)


k = Account("Kim", 1000)
k.deposit(100)
k.deposit(200)
k.deposit(300)
k.deposit_history()

k.withdraw(100)
k.withdraw(200)
k.withdraw_history()

 

출처 : https://wikidocs.net/7037