Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

print(f’\n{arithmetic_arranger([“24 + 85215”, “3801 - 2”, “45 + 43”, “123 + 49”])}') doesn’t return ‘Error: Numbers cannot be more than four digits.’ as it should be

Your code so far

def arithmetic_arranger(problems, show_answers=False):
    #check điều kiện 1

    if len(problems) > 5:
        return 'Error: Too many problems.'
    #check điều kiện 2

    for problem in problems:
        if '+' in problem:  
            pass
        elif '-' in problem:
            pass
        else:
            return "Error: Operator must be '+' or '-'."
    #check điều kiện 3 + 4 chia dấu và số
    numbers = []   
    signs = []
    for problem in problems:
        splitnum = problem.split()
        numbers.append(splitnum[0])
        numbers.append(splitnum[2])
        signs.append(splitnum[1])
    for number in numbers:
        if not number.isdigit():
            return 'Error: Numbers must only contain digits.'
    for number in numbers:
        if len(number) > 4:
            return 'Error: Numbers cannot be more than four digits.'

    #đặt các tập
    
        answers = []
        toprow = ''
        bottomrow = ''
        dash = ''
        answerrow = ''
        for i in range (0, len(numbers), 2):
            num1 = int(numbers[i])
            num2 = int(numbers[i+1])
            sign = signs[i//2]
            if sign == '+':
                answer = num1 + num2
            else:
                answer = num1 - num2
            answers.append(answer)

            spacewidth = max(len(numbers[i]), len(numbers[i+1])) + 2
            toprow += numbers[i].rjust(spacewidth)
            bottomrow += sign + numbers[i+1].rjust(spacewidth-1)
            dash += '-' * spacewidth
        #spacing
            if i < len(numbers) - 2:
                toprow += ' ' * 4
                bottomrow += ' ' * 4
                dash += ' ' * 4
        for i in range(len(answers)):
            spacewidth = max(len(numbers[i*2]),len(numbers[i*2+1])) + 2     #spacing đáp án (numbers[0] + numbers[1]=answers[1])
            answerrow += str(answers[i]).rjust(spacewidth)
            if i < len(answers) - 1:
                answerrow += ' '*4
        #show_answers true và false
        if show_answers == True:
            arrangedproblems = '\n'.join((toprow, bottomrow, dash, answerrow))
        else:
            arrangedproblems = '\n'.join((toprow, bottomrow, dash))


        return arrangedproblems

print(f'\n{arithmetic_arranger(["24 + 85215", "3801 - 2", "45 + 43", "123 + 49"])}')

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Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

what part of your code is checking for that?

3

it should be this part

4

add print(number) in the loop, does it check all the numbers?

1 Like
5

oh it doesn’t but i wonder why it doesn’t work like the code checking for the digits ?

6

oh wait i see why, i accidentally add the next part of my code into the loop as well while trying to fix other bug

7

good find! sometimes some debugging will help you figure out where is the point of failure!

1 Like