Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

The preview shows correct formatting, but the code didn’t pass the formatting tests.

Your code so far

def arithmetic_arranger(problems, show_answers=False):
    top = ""
    bottom = ""
    line = ""
    tline = ""

    if len(problems) > 5:
        return ('Error: Too many problems.')
    
    for problem in problems:
        firstNumber = problem.split()[0]
        secondNumber = problem.split()[2]
        operator = problem.split()[1]
        maxlength = max(len(firstNumber), len(secondNumber))
        
        if operator != '+' and operator != '-':
            return "Error: Operator must be '+' or '-'."
        if not firstNumber.isdigit() or not secondNumber.isdigit():
            return 'Error: Numbers must only contain digits.'
        if maxlength > 4:
            return 'Error: Numbers cannot be more than four digits.'

        if operator == '+':
            result = str(int(firstNumber) + int(secondNumber))
        else:
            result = str(int(firstNumber) - int(secondNumber))

        top = top + str(firstNumber).rjust(maxlength + 2) + 4 * " "
        bottom = bottom + operator + str(secondNumber).rjust(maxlength + 1) + 4 * " "
        line = line + '-' * (maxlength + 2) + 4 * " "

        if show_answers:
            tline = tline + result.rjust(maxlength + 2) + 4 * " "

    problems = top + "\n" + bottom + "\n" + line + "\n" + tline
    return problems

print(arithmetic_arranger(["3801 - 2", "123 - 49"]))
print(arithmetic_arranger(["1 + 2", "1 - 9380"]))
print(arithmetic_arranger(["3 + 855", "3801 - 2", "45 + 43", "123 + 49"]))
print(arithmetic_arranger(["11 + 4", "3801 - 2999", "1 + 2", "123 + 49", "1 - 9380"]))
print(arithmetic_arranger(["3 + 855", "988 + 40"], True))
print(arithmetic_arranger(["32 - 698", "1 - 3801", "45 + 43", "123 + 49", "988 + 40"], True))

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Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

Hi @kaushik_agasthi and welcome to our community!

You have a whitespace issue. It’s not visible in the console but trying wrapping the contents of your print calls in repr(). This will show you where the differences are between the string which your function is returning and the required result.

EXAMPLE:

# your output
print(repr(arithmetic_arranger(["3801 - 2", "123 - 49"])))

# expected output
print(repr('  3801      123\n-    2    +  49\n------    -----'))