파이썬 클래스 예제 1-6

1. Account 클래스에 입금을 위한 deposit 메서드를 추가하세요. 입금은 최소 1원 이상만 가능합니다.

 

정답확인 -> 

import random

class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        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

 

2. Account 클래스에 출금을 위한 withdraw 메서드를 추가하세요. 출금은 계좌의 잔고 이상으로 출금할 수는 없습니다.

 

정답확인 -> 

import random


class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        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

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

k = Account("kim", 100)
k.deposit(100)
k.withdraw(90)
print(k.balance)

3. Account 인스턴스에 저장된 정보를 출력하는 display_info() 메서드를 추가하세요. 잔고는 세자리마다 쉼표를 출력하세요.

은행이름: SC은행
예금주: 파이썬
계좌번호: 111-11-111111
잔고: 10,000원

 

정답확인 -> 

import random


class Account:
    # class variable
    account_count = 0

    def __init__(self, name, balance):
        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

    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)


p = Account("파이썬", 10000)
p.display_info()

 

4. 입금 횟수가 5회가 될 때 잔고를 기준으로 1%의 이자가 잔고에 추가되도록 코드를 변경해보세요.

 

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)

p = Account("파이썬", 10000)
p.deposit(10000)
p.deposit(10000)
p.deposit(10000)
p.deposit(5000)
p.deposit(5000)
print(p.balance)

 

출처 : https://wikidocs.net/7037