Build a Budget App Project - Build a Budget App Project

Python
1

Tell us what’s happening:

I’m having a problem creating the function create_spend_chart.
the console says “create_spend_chart should print a different chart representation. Check that all spacing is exact.”
if someone could help that would be great

Your code so far

class Category:
    def __init__(self, category):
        self.category = category
        self.ledger = []

    def deposit(self, amount, description=""):
        if amount > 0:
            self.ledger.append({'amount': amount, 'description': description})

    def withdraw(self, amount, description=""):
        if self.check_funds(amount):
            self.ledger.append({'amount': -amount, 'description': description})
            return True
        return False

    def get_balance(self):
        return sum(item['amount'] for item in self.ledger)

    def transfer(self, amount, other_category):
        if self.check_funds(amount):
            self.withdraw(amount, f"Transfer to {other_category.category}")
            other_category.deposit(amount, f"Transfer from {self.category}")
            return True
        return False

    def check_funds(self, amount):
        return amount <= self.get_balance()

    def __str__(self):
        # Title line centered
        title = f"{self.category:*^30}"
        # Ledger entries formatted
        items = ""
        for entry in self.ledger:
            description = entry['description'][:23]
            amount = f"{entry['amount']:>7.2f}"
            items += f"{description:<23}{amount}\n"
        # Total line
        total = f"Total: {self.get_balance():.2f}"
        
        return f"{title}\n{items}{total}"


def create_spend_chart(categories):
    # Calculate total spending per category and round down to the nearest 10
    category_spending = {}
    for category in categories:
        total_spent = sum(-item['amount'] for item in category.ledger if item['amount'] < 0)
        rounded_spent = (total_spent // 10) * 10
        category_spending[category.category] = rounded_spent

    # Find the maximum rounded spending to determine the scale of the chart
    max_spending = max(category_spending.values(), default=0)

    # Create the chart header
    chart = "Percentage spent by category\n"
    
    # Create the chart lines
    for i in range(100, -1, -10):
        line = f"{i:>3}| "
        for category in categories:
            if category_spending[category.category] / max_spending * 100 >= i:
                line += "o  "
            else:
                line += "   "
        chart += line.rstrip() + " \n"

    # Add the chart footer with category names
    chart += "    -" + "---" * len(categories) + "\n"
    max_length = max(len(cat.category) for cat in categories)
    for i in range(max_length):
        line = "     "
        for category in categories:
            if i < len(category.category):
                line += category.category[i] + "  "
            else:
                line += "   "
        chart += line.rstrip() + " \n"

    return chart.rstrip()

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/17.5 Safari/605.1.15

Challenge Information:

Build a Budget App Project - Build a Budget App Project

2

Check the browser console (press F12) for a more detailed error message.

3

I did and the error message is : ’ ```
create_spend_chart


should print a different chart representation. Check that all spacing is exact.'
4

This is the console section of fCC but you need to check the console of your actual Internet Browser. Press f12 and click “console”.

You are looking for something that looks like this:

Screenshot 2024-07-24 095747
Screenshot 2024-07-24 0957471144×471 103 KB

5

An assertion error gives you a lot of information to track down a problem. For example:

AssertionError: 'Year' != 'Years'
- Year
+ Years
?     +

Your output comes first, and the output that the test expects is second.

AssertionError: ‘Year’ != ‘Years’

Your output: Year does not equal what’s expected: Years

- Year
+ Years
?     +

- Dash indicates the incorrect output
+ Plus shows what it should be
? The Question mark line indicates the place of the character that’s different between the two lines. Here a + is placed under the missing s .

Here’s another example:

E       AssertionError: Expected different output when calling "arithmetic_arranger()" with ["3801 - 2", "123 + 49"]
E       assert '  3801      123    \n   - 2     + 49    \n------    -----    \n' == '  3801      123\n-    2    +  49\n------    -----'
E         -   3801      123
E         +   3801      123    
E         ?                ++++
E         - -    2    +  49
E         +    - 2     + 49    
E         - ------    -----
E         + ------    -----    
E         ?                +++++

The first line is long, and it helps to view it as 2 lines in fixed width characters, so you can compare it character by character:

'  3801      123    \n   - 2     + 49    \n------    -----    \n'
'  3801      123\n-    2    +  49\n------    -----'

Again, your output is first and the expected output is second. Here it’s easy to see extra spaces or \n characters.

E         -   3801      123
E         +   3801      123    
E         ?                ++++

Here the ? line indicates 4 extra spaces at the end of a line using four + symbols. Spaces are a little difficult to see this way, so it’s useful to use both formats together.

I hope this helps interpret your error!