Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

The functionality of my code is there. However, the formatting of my output is wrong, it goes from upwards to downwards and not left to right. How should I proceed?

Your code so far

def arithmetic_arranger(problems, show_answers=False):

    if len(problems) > 5:
        print('Error: Too many problems.')
        return

    for problem in problems:
        parts = problem.split()
        if parts[0].isnumeric() and parts[2].isnumeric():
            if len(parts[0]) < 5 and len(parts[2]) < 5:
                if parts[1] == '+':
                    sum = int(parts[0]) + int (parts[2])
                elif parts [1] == '-':
                    sum = int(parts[0]) - int(parts[2])
                else:
                    print("Error: Operator must be '+' or '-'.")
                    return
            else: 
                print('Error: Numbers cannot be more than four digits.')
                return
        else:
            print('Error: Numbers must only contain digits.')
            return

        first_line = []
        second_line = []
        dashes = []
        answers = []

        parts = problem.split()
        width = max(len(parts[0]), len(parts[2])) + 2
        first_line.append(f"{parts[0]:>{width}}")
        second_line.append(f"{parts[1]} {parts[2]:>{width-2}}")
        dashes.append('-' * width)
        if show_answers:
            answer = str(eval(problem))
            answers.append(f"{answer:>{width}}")
            
        # Join the lines with spaces
        print("    ".join(first_line))
        print("    ".join(second_line))
        print("    ".join(dashes))
        if show_answers:
            print("    ".join(answers))

arithmetic_arranger(["3 + 855", "988 + 40"], True)

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Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

In case of printing, there isn’t really any simpler way than formatting it line by line. So ie. everything from line 1 is printed first, only then next line is proceeded.

Keep in mind also that function is not expected to print anything on it own.

4

UPDATE
I managed to fix it by moving my lists and print statements outside the for loop.

5

However I now face another problem. After running the test, it still returns incorrect for all, despite the output to be correct when I put the function call in my code.

6

Thank you for your reply. Are you referring to the last line of my code with regards to the function not expected to print anything on its own?

7

Function should return string with arranged problems, or string with error.

1 Like
8

Thank you! I managed to solve it.

1 Like