Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

Manual testing of the test criteria results in the same output, however, the coded solution does not pass the tests. I believe my return values are the same as those required and the output to the console indicates so, but the only tests that my code passes are the error tests. Any help would be much appreciated!

Your code so far

def instant_errors(problems):
    if len(problems) > 5:
        return "Error: Too many problems."
    for problem in problems:
        if not ("+" in problem or "-" in problem):
            return "Error: Operator must be '+' or '-'."
        try:
            int(problem.replace("+", "").replace("-", ""). replace(" ", ""))
        except ValueError:
            return "Error: Numbers must only contain digits."
        nums = problem.replace("+", "").replace("-", "").split()
        if int(nums[0]) > 10000 or int(nums[1]) > 10000:
            return "Error: Numbers cannot be more than four digits."
    

def arithmetic_arranger(problems, show_answers=False):
    errors = instant_errors(problems)
    first_number = []
    operation = []
    second_number = []
    answers = []
    widths = []
    first_row = ""
    second_row = ""
    lines = ""
    answers_row = ""
    if errors != None:
        return errors
    else:
        for problem in problems:
            split_problem = problem.split()
            first_number.append(split_problem[0])
            operation.append(split_problem[1])
            second_number.append(split_problem[2])
        for i in range(len(problems)):
            widths.append(max(len(str(first_number[i])), len(str(second_number[i]))) + 2)
            first_row += " " * (widths[i] - len(str(first_number[i]))) + first_number[i] + "    "
            second_row += operation [i] + " " * (widths[i] - len(str(second_number[i])) - 1) + second_number[i] + "    "
            lines += "-" * widths[i] + "    "
            if operation[i] == "+":
                answers.append(int(first_number[i]) + int(second_number[i]))
            else:
                answers.append(int(first_number[i]) - int(second_number[i]))
            answers_row += " " * (widths[i] - len(str(answers[i]))) + str(answers[i]) + "    "

    if show_answers:
        return "\n".join((first_row, second_row, lines, answers_row))
    else:
        return "\n".join((first_row, second_row, lines))



print(arithmetic_arranger(["3801 - 2", "123 + 49"]))
print()
print("  3801      123\n-    2    +  49\n------    -----")

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Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

Welcome to the forum :wave:

You might have some spacing differences that are hard to see normally.

You can use the dev console (F12) to see a clear error message. You can also call your function using repr() to match the raw string output to the format given in the tests:

print(repr(arithmetic_arranger(["3801 - 2", "123 + 49"])))
3

Hi @loadurbrain

You need to also allow the solution to show.

image
image1182×173 21 KB

As @pkdvalis mentioned, note the white space before True.

Happy coding