Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

even when my code displays the correct result for all the cases it still gives me an error

Your code so far

def arithmetic_arranger(problems, show_answers=False):
    if len(problems) > 5:
        raise ValueError("Error: Too many problems.")

    top_row = []
    bottom_row = []
    dash_row = []
    result_row = []

    for problem in problems:
        num1, operator, num2 = problem.split()

        if operator not in ("+", "-"):
            raise ValueError("Error: Operator must be '+' or '-'.")

        if not num1.isdigit() or not num2.isdigit():
            raise ValueError("Error: Numbers must only contain digits.")

        if len(num1) > 4 or len(num2) > 4:
            raise ValueError("Error: Numbers cannot be more than four digits.")

        result = int(num1) + int(num2) if operator == "+" else int(num1) - int(num2)

        width = max(len(num1), len(num2)) + 2

        top_row.append(num1.rjust(width))
        bottom_row.append(f'{operator} {num2.rjust(width - 2)}')  
        dash_row.append("-" * width)  
        result_row.append(str(result).rjust(width))

    print("    ".join(top_row))
    print("    ".join(bottom_row))
    print("    ".join(dash_row))
    
    if show_answers:
        print("    ".join(result_row))
    
        
arithmetic_arranger(["3801 - 2", "123 + 49"],True)

Your browser information:

User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/133.0.0.0 Safari/537.36

Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

What your function returns?

3

Please share more information.

What is the error?
What does your function return?

4

returns the problems

Your function needs to return the answer, not print it. Test your functions return like this:

print(arithmetic_arranger(["3801 - 2", "123 + 49"],True))
5

even this doesn’t work:

def arithmetic_arranger(problems, show_answers=False):
if len(problems) > 5:
raise ValueError(“Error: Too many problems.”)

top_row = []
bottom_row = []
dash_row = []
result_row = []

for problem in problems:
    num1, operator, num2 = problem.split()

    if operator not in ("+", "-"):
        raise ValueError("Error: Operator must be '+' or '-'.")

    if not num1.isdigit() or not num2.isdigit():
        raise ValueError("Error: Numbers must only contain digits.")

    if len(num1) > 4 or len(num2) > 4:
        raise ValueError("Error: Numbers cannot be more than four digits.")

    result = int(num1) + int(num2) if operator == "+" else int(num1) - int(num2)

    width = max(len(num1), len(num2)) + 2

    top_row.append(num1.rjust(width))
    bottom_row.append(f'{operator} {num2.rjust(width - 2)}')  
    dash_row.append("-" * width)  
    result_row.append(str(result).rjust(width))

final_result = "\n".join([
    "    ".join(top_row),
    "    ".join(bottom_row),
    "    ".join(dash_row)
])

if show_answers:
    final_result += "\n" + "    ".join(result_row)

return final_result

when I take the value given by test cases and test them in the console the output is correctly returned, but still, the test failed for some reason

6

i have figured it out, i should replace the “raise ValueError” statement with return too

1 Like