这是我在python中的第一个项目。我希望确保预算类别(食品、布料和娱乐)的分配值不大于self.amtt

Question

class budgetapp():

    def __init__(self,Deposit_amtt, Food, Cloth, Entertainment):
        self.amtt = Deposit_amtt
        self.Food = Food
        self.Cloth = Cloth
        self.Entertainment = Entertainment

    def withdrawal(self):

        for i in range (0,1):
            print('Press 1 for Food\n')

            print('Press 2 for Cloth\n')

            print('Press 3 for Entertainment\n')

        choice = int(input('Which Budget Category do you want to withdraw From?: '))

        if choice == 1:
            
            amt_withdrawal = float(input("How Much do you want to withdraw: "))
        
            if amt_withdrawal>=0 and amt_withdrawal<= self.Food:
                print("Withdrawal Successful")

            elif amt_withdrawal > self.Food:
                print("Insufficient Balance")
            
            else:
                print("Negative values cannot be withdrawn")

        elif choice == 2:

            amt_withdrawal = float(input("How Much do you want to withdraw: "))
            
        
            if amt_withdrawal>=0 and amt_withdrawal<= self.Cloth:
                print("Withdrawal Successful")

            elif amt_withdrawal > self.Cloth:
                print("Insufficient Balance")

            else:
                print("Negative values cannot be withdrawn")

        elif choice == 3:
        
            amt_withdrawal = float(input("How Much do you want to withdraw: "))
        
            if amt_withdrawal>=0 and amt_withdrawal<= self.Entertainment:
                print("Withdrawal Successful")

            elif amt_withdrawal > self.Entertainment:
                print("Insufficient Balance")
            
            else:
                print("Negative values cannot be withdrawn")

        else:  
            print('Invalid choice. Options are between 1-3 only')


budg = budgetapp(float(input("Enter an amount to deposit: ")),
                 float(input("What percentage of total amount do you want to allocate to food: ")), 
                 float(input("What percentage of total amount do you want to allocate to cloth: ")),
                 float(input("What percentage of total amount do you want to allocate to Entertainment: ")))
budg.withdrawal()

Answer 1

关于代码的提示：

• 使用Python样式指南命名约定
• 构造函数(即方法init)
  • 食物、衣服和娱乐津贴是存款金额的百分比
  • 将这些从百分比换算为金额
  • 检查总数为100的百分比
  • 如果不例外，则引发异常。

• 方法提取
  • 显示与每个选择选项的平衡
  • 检查足够的提款资金
  • 如果撤回成功，则更新余额

码

class BudgetApp:

    def __init__(self,deposit_amt, food, cloth, entertainment):
        self.balance = deposit_amt
        
        if food + cloth + entertainment == 100:
            self.food = food * deposit_amt / 100.
            self.cloth = cloth * deposit_amt / 100.
            self.entertainment = entertainment * deposit_amt / 100.
        else:
            raise Exception("food, cloth, entertainment percent should sum to 100")

    def withdrawal(self):
        
        choice = int(input(f'''
        Which Budget Category do you want to withdraw from?: 
            Please Enter:
                1 for Food (balance: {self.food:.2f})
                2 for Cloth (balance: {self.cloth:.2f})
                3 for Entertainment (balance: {self.entertainment:.2f})'''))

        if choice == 1:
            
            amt_withdrawal = float(input("How Much do you want to withdraw: "))
        
            if 0 < amt_withdrawal <= self.food:
                self.balance -= amt_withdrawal
                self.food -= amt_withdrawal
                print("Withdrawal Successful")

            elif amt_withdrawal > self.food:
                print("Insufficient Food Balance")
            
            else:
                print("Negative values cannot be withdrawn")

        elif choice == 2:

            amt_withdrawal = float(input("How Much do you want to withdraw: "))
            
            if 0 < amt_withdrawal <= self.cloth:
                self.balance -= amt_withdrawal
                self.cloth -= amt_withdrawal
                print("Withdrawal Successful")

            elif amt_withdrawal > self.cloth:
                print("Insufficient Cloth Balance")

            else:
                print("Negative values cannot be withdrawn")

        elif choice == 3:
        
            amt_withdrawal = float(input("How Much do you want to withdraw: "))
        
            if 0 < amt_withdrawal <= self.entertainment:
                self.balance -= amt_withdrawal
                self.entertainment -= amt_withdrawal
                print("Withdrawal Successful")

            elif amt_withdrawal > self.Entertainment:
                print("Insufficient Entertainment Balance")
            
            else:
                print("Negative values cannot be withdrawn")

        else:  
            print('Invalid choice. Options are between 1-3 only')


budg = BudgetApp(float(input("Enter an amount to deposit: ")),
                 float(input("What percentage of total amount do you want to allocate to food: ")), 
                 float(input("What percentage of total amount do you want to allocate to cloth: ")),
                 float(input("What percentage of total amount do you want to allocate to Entertainment: ")))
budg.withdrawal()

测试运行

Enter an amount to deposit: 100
What percentage of total amount do you want to allocate to food: 40
What percentage of total amount do you want to allocate to cloth: 30
What percentage of total amount do you want to allocate to Entertainment: 30

        Which Budget Category do you want to withdraw from?: 
            Please Enter:
                1 for Food (balance: 40.00)
                2 for Cloth (balance: 30.00)
                3 for Entertainment (balance: 30.00)1
How Much do you want to withdraw: 25
Withdrawal Successful