Build a Budget App - Build a Budget App

Python
1

Tell us what’s happening:

All tests after 16 are failing. I have no idea what the problem seems to be. Output seems correct to me.

Your code so far

class Category:
    def __init__(self, name):
        self.name = name
        self.ledger = []
    
    def __str__(self):
        return_string = self.name[:30].center(30,'*') + '\n'
        for entry in self.ledger:
            return_string += entry['description'][:23].ljust(23) + "{:.2f}".format(entry['amount']).rjust(7) + '\n'
        return_string += f"Total: {self.get_balance():.2f}"
        return return_string
    

    def deposit(self, amount: float, description=''):
        self.ledger.append({'amount': amount, 'description': description})
    
    def withdraw(self, amount: float, description=''):
        if not self.check_funds(amount):
            return False
        self.ledger.append({'amount': -amount, 'description': description})
        return True

    def get_balance(self):
        balance = 0
        for entry in self.ledger:
            balance += (entry['amount'])
        return balance
    
    def check_funds(self, amount):
        if self.get_balance() < amount:
            return False
        return True
    
    def transfer(self, amount: float, destination: 'Category'):
        if not self.check_funds(amount):
            return False
        self.withdraw(amount, f'Transfer to {destination.name}')
        destination.deposit(amount, f'Transfer from {self.name}')
        return True

def create_spend_chart(categories):
    #20 lines
    category_withdrawals = {}
    total_withdrawal = 0
    for category in categories:
        withdrawals = 0
        for transaction in category.ledger:
            amount = transaction['amount']
            if amount < 0:
                withdrawals += amount
        category_withdrawals[category.name] = withdrawals
        total_withdrawal += withdrawals
    #calc percentages
    category_percentages = {}
    category_percentages_rounded = {}
    for name in category_withdrawals.keys():
        category_percentages[name] = category_withdrawals[name]/total_withdrawal
        category_percentages_rounded[name] = round(category_percentages[name]*10)*10
    output = "Percentage spent by category"
    return_string = ''
    for percent in range(100, -1, -10):
        line = '\n'+ f'{percent}|'.rjust(4)
        for value in category_percentages_rounded.values():
            char = ''
            if value >= percent:
                char = 'o'
            line += char.center(3,' ')
        return_string += line
    output += return_string
    return_string = '\n'
    return_string += "    " + "-" * (len(category_percentages_rounded) * 3 + 1)
    max_name_length = max(len(name) for name in category_percentages_rounded)
    for i in range(max_name_length):
        line = '\n    '
        for name in category_percentages_rounded:
            if i < len(name):
                line += name[i].center(3)
            else:
                line += '   '
        return_string += line
    output += return_string
    #output += create_graph(category_percentages_rounded)
    #output += create_legend(category_percentages_rounded)
    print(output)

def create_graph(percentages):
    return_string = ''
    for percent in range(100, -1, -10):
        line = '\n'+ f'{percent}|'.rjust(4)
        for value in percentages.values():
            char = ''
            if value >= percent:
                char = 'o'
            line += char.center(3,' ')
        return_string += line
    return return_string

def create_legend(percentages):
    return_string = '\n'
    return_string += "    " + "-" * (len(percentages) * 3 + 1)
    max_name_length = max(len(name) for name in percentages)
    for i in range(max_name_length):
        line = '\n    '
        for name in percentages:
            if i < len(name):
                line += name[i].center(3)
            else:
                line += '   '
        return_string += line
    return return_string

food = Category("Food")
food.deposit(1000, "deposit")
food.withdraw(500.00, "groceries")

clothing = Category("Clothing")
clothing.deposit(1000, "deposit")
clothing.withdraw(100.00, "buying new clothes")

auto = Category("Auto")
auto.deposit(1000, "deposit")
auto.withdraw(200.00, "fuel")

food.transfer(200, clothing)


categories = [food, clothing, auto]
chart_str = create_spend_chart(categories)

print(clothing)
print(chart_str)

Your browser information:

User Agent is: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/26.1 Safari/605.1.15

Challenge Information:

Build a Budget App - Build a Budget App

2 
*************Food*************
initial deposit        1000.00
groceries               -10.15
restaurant and more foo -15.89
Transfer to Clothing    -50.00
Total: 923.96

*************Food*************
deposit                1000.00
groceries               -10.15
restaurant and more foo -15.89
Transfer to Clothing    -50.00
Total: 923.96

“initial depost” vs “deposit” stands out to me here

3

that part is working. The tests are failing with the Test for the output “Percentage spent by category”

4

after test 16, my mistake.

  1. You should have a function outside the Category class named create_spend_chart(categories) that returns a bar-chart string.

Review what your function should be returning

5

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