I have been working through the build a budget app project in the python course, however I’ve come to a halt where I can’t pass through test17, through testing, when I try and return the string after calling get_percentages(categories), it raises the failure, returning before works fine. P.S I am aware I haven’t completed the rest of the tests past the percentages part.
class Category:
def __init__(self, name):
self.name = name
self.ledger = []
self.total_spent = 0
def get_balance(self):
balance = 0
for receipt in self.ledger:
amount = round(receipt['amount'], 2)
balance += amount
return balance
def check_funds(self, amount):
if self.get_balance() - amount < 0.00:
return False
else:
return True
def deposit(self, amount, desc=""):
receipt = {
'amount': round(amount, 2),
'description': desc
}
self.ledger.append(receipt)
def withdraw(self, amount, desc=""):
if self.check_funds(amount) == True:
receipt = {
'amount': round(-amount, 2),
'description': desc
}
self.ledger.append(receipt)
return True
else:
return False
def transfer(self, amount, recipient):
withdraw_desc = f'Transfer to {recipient.name}'
if self.withdraw(amount, withdraw_desc) == True:
deposit_desc = f'Transfer from {self.name}'
recipient.deposit(amount, deposit_desc)
return True
else:
return False
def __str__(self):
category_summary = ''
bound_1 = (30 - len(self.name)) // 2
if bound_1 * 2 + len(self.name) == 30:
bound_2 = bound_1
else:
bound_2 = bound_1 + 1
header = '*' * bound_1 + self.name + '*' * bound_2 + '\n'
category_summary += f'{header:^}'
for receipt in self.ledger:
desc = receipt["description"]
desc = desc[:23]
amount = receipt["amount"]
amount = f'{amount:.2f}'
desc_to_end = 30 - len(amount) - len(desc)
category_summary += f'{desc}' + ' '*desc_to_end + f'{amount}\n'
category_summary += f"Total: {self.get_balance()}"
return category_summary
def sum_totals(catergories):
for category in categories:
category_total = 0
for receipt in category.ledger:
amount = receipt['amount']
if amount < 0.00:
category_total += -amount
category.total_spent = round(category_total, 2)
def get_percentages(categories):
total_expenses = 0
percentages = []
for cat in categories:
total_expenses += cat.total_spent
for cat in categories:
percentage = round(cat.total_spent / total_expenses * 100,-1)
percentage = int(percentage)
percentages.append(percentage)
return percentages
def create_spend_chart(categories):
bar_chart_string = 'Percentage spent by category\n'
sum_totals(categories)
y_axis_string = ''
x_axis_string = ''
percentages = get_percentages(categories)
for x in range(100, -10, -10):
digits = len(str(x))
y_axis_string += ' ' * (3 - digits) + str(x) + '|' + ' '
for p in percentages:
if x <= p:
y_axis_string += 'o '
else:
y_axis_string += ' '
y_axis_string += '\n'
bar_chart_string += y_axis_string
return bar_chart_string
food = Category('Food')
food.deposit(1000, 'initial deposit')
food.withdraw(10.15, 'groceries')
food.withdraw(15.89, 'restaurant and more food for dessert')
clothing = Category('Clothing')
travel = Category('Travel')
travel.deposit(500, 'Travel allowance')
travel.withdraw(29.99, 'Train ticket')
food.transfer(50, clothing)
categories = []
categories.append(food)
categories.append(clothing)
categories.append(travel)
print(create_spend_chart(categories))
print(food)
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dhess
August 23, 2026, 12:49pm
2
Welcome to the forum @EvanJrDev ,
Please post a link to this challenge.
In the future, when you have a question, please use the “Help” button, which will send us your formatted code and a link to the challenge.
Happy coding
dhess
August 23, 2026, 1:13pm
3
Please check your browser’s console. You have a “Division by Zero” error here:
Also, round will not give you the correct percentage. In the instructions it says:
The percentage should be the percentage of the amount spent for each category to the total spent for all categories (rounded down to the nearest 10).
That means if your total withdrawals for a category divided by total withdrawals for all categories totals $29.17, the percentage would be 20.
Happy coding
Wow, I can’t believe I missed that zero error! Thanks so much!
Test 19 is failing, but I’m sure I have rounded down to the nearest 10 (line 117) for each percentage before appending to my bar chart strings. Any help would be greatly appreciated, thanks.
class Category:
def __init__(self, name):
self.name = name
self.ledger = []
self.total_spent = 0
def get_balance(self):
balance = 0
for receipt in self.ledger:
amount = round(receipt['amount'], 2)
balance += amount
return balance
def check_funds(self, amount):
if self.get_balance() - amount < 0.00:
return False
else:
return True
def deposit(self, amount, desc=""):
receipt = {
'amount': round(amount, 2),
'description': desc
}
self.ledger.append(receipt)
def withdraw(self, amount, desc=""):
if self.check_funds(amount) == True:
receipt = {
'amount': round(-amount, 2),
'description': desc
}
self.ledger.append(receipt)
return True
else:
return False
def transfer(self, amount, recipient):
withdraw_desc = f'Transfer to {recipient.name}'
if self.withdraw(amount, withdraw_desc) == True:
deposit_desc = f'Transfer from {self.name}'
recipient.deposit(amount, deposit_desc)
return True
else:
return False
def __str__(self):
category_summary = ''
bound_1 = (30 - len(self.name)) // 2
if bound_1 * 2 + len(self.name) == 30:
bound_2 = bound_1
else:
bound_2 = bound_1 + 1
header = '*' * bound_1 + self.name + '*' * bound_2 + '\n'
category_summary += f'{header:^}'
for receipt in self.ledger:
desc = receipt["description"]
desc = desc[:23]
amount = receipt["amount"]
amount = f'{amount:.2f}'
desc_to_end = 30 - len(amount) - len(desc)
category_summary += f'{desc}' + ' '*desc_to_end + f'{amount}\n'
category_summary += f"Total: {self.get_balance()}"
return category_summary
def sum_totals(catergories):
for category in categories:
category_total = 0
for receipt in category.ledger:
amount = receipt['amount']
if amount < 0.00:
category_total += -amount
category.total_spent = round(category_total, 2)
def get_percentages(categories):
total_expenses = 0
percentages = []
for cat in categories:
total_expenses += cat.total_spent
for cat in categories:
if cat.total_spent == 0:
percentage = 0
else:
percentage = round((cat.total_spent / total_expenses) * 100, 2)
percentages.append(percentage)
return percentages
def create_spend_chart(categories):
bar_chart_string = 'Percentage spent by category\n'
sum_totals(categories)
y_axis_string = ''
x_axis_string = ''
percentages = get_percentages(categories)
for x in range(100, -10, -10):
digits = len(str(x))
y_axis_string += ' ' * (3 - digits) + str(x) + '|' + ' '
for p in percentages:
p = (p // 10) * 10
print(p)
if x <= p:
y_axis_string += 'o '
else:
y_axis_string += ' '
y_axis_string += '\n'
bar_chart_string += y_axis_string
return bar_chart_string
food = Category('Food')
food.deposit(1000, 'initial deposit')
food.withdraw(10.15, 'groceries')
food.withdraw(15.89, 'restaurant and more food for dessert')
clothing = Category('Clothing')
travel = Category('Travel')
travel.deposit(500, 'Travel allowance')
travel.withdraw(29.99, 'Train ticket')
food.transfer(50, clothing)
categories = []
categories.append(food)
categories.append(clothing)
categories.append(travel)
print(create_spend_chart(categories))
print(food)
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/151.0.0.0 Safari/537.36
Build a Budget App - Build a Budget App
GitHub Link: freeCodeCamp/curriculum/challenges/english/blocks/lab-budget-app/5e44413e903586ffb414c94e.md at main · freeCodeCamp/freeCodeCamp · GitHub
dhess
August 23, 2026, 4:28pm
6
I went ahead and combined your posts for you. In the future, just reply to the original thread to add further updates.
dhess
August 23, 2026, 4:29pm
7
Please review my previous post about this:
dhess:
Also, round will not give you the correct percentage. In the instructions it says:
The percentage should be the percentage of the amount spent for each category to the total spent for all categories (rounded down to the nearest 10).
That means if your total withdrawals for a category divided by total withdrawals for all categories totals $29.17, the percentage would be 20.
ILM
August 23, 2026, 4:33pm
8
I am not sure the tests are able to test an half done chart, please add also the bottom half
Thanks, I’ll continue with the rest then.