I dont know whats wrong with my Arithmetic formatter

Python
1

So i have been stuck on this problem for a long time I’m neary done but my code seems to mess up at this problem. [“11 + 4”, “3801 - 2999”, “1 + 2”, “123 + 49”, “1 - 9380”]

def arithmetic_arranger(problems, answer = False):
    
    #sets up list to be used later
    over_list = list()
    middel_list = list()
    lower_list = list()
    the_main_list = problems

    #checks if there is more then 4 problems
    if len(the_main_list) > 5:
        return('Error: Too many problems.')
    
    #checks if the input is numbers and not charachters
    for one_cal in the_main_list:
        one_problem = one_cal.split()
        try: 
            one = int(one_problem[0])
            two = int(one_problem[2])
        except: 
            return("Error: Numbers must only contain digits.")

        #checks if the problem is - or +
        thing = one_problem[1] == '-' or one_problem[1] == '+'
        if not thing:
            return("Error: Operator must be '+' or '-'.")
        lengt = len(one_problem[0]) < 5 and len(one_problem[2]) < 5

        #checks if the problem is longer then 4 digets
        if not lengt:
            return('Error: Numbers cannot be more than four digits.')
    #Calcuats the aswers if requested
    aswer_list = list()
    if answer:
        for x in the_main_list:
            y = x.split()
            number_one = int(y[0])
            number_two = int(y[2])
            if y[1] == '+':
                asnwer3 = number_one + number_two
            elif y[1] == '-':
                asnwer3 = number_one - number_two
            if asnwer3 < 0:
                aswer_with_backspace = ' ' + str(asnwer3)
                aswer_list.append(aswer_with_backspace)
            else:
                aswer_with_backspace = '  ' + str(asnwer3)
                aswer_list.append(aswer_with_backspace)
    #Splits the problems and add the nessery spaces
    for x in problems:
        y = x.split()
        if len(y[0]) < 1 and len([2]) < 1:
            lengt_of_under = 4

        elif len(y[0]) >= len(y[2]):
            lengt_of_under = len(y[0]) + 2

        elif len(y[0]) <= len(y[2]):
            lengt_of_under = len(y[2]) + 2
        
        backspace_over = lengt_of_under - len(y[0])
        adfada = ' ' * backspace_over
        lower_things = '-' * lengt_of_under
        lower_space_numbers = lengt_of_under - len(y[2]) - 1
        lower_with_things = ' '*lower_space_numbers
        middel_list.append(y[1] + lower_with_things + y[2])
        over_list.append(adfada+y[0])
        lower_list.append(lower_things)

    #Arranges the list to be the way that is requsted
    Arragen = [over_list,middel_list, lower_list,  aswer_list]
    arranged_problems = ("\n".join(map("    ".join, Arragen)))
    return arranged_problems

Challenge: Arithmetic Formatter

Link to the challenge:

2

Your error on my machine (slightly rearranged):

    self.assertEqual(
AssertionError: '    [36 chars]   
         -    2    + 43    +  49\n
-----    ------    ----    -----\n'
 != '    [36 chars]
         -    2    + 43    +  49\n
-----    ------    ----    -----'

Note the difference in newlines.

3

I hate to ask but, Do you know any solutions to the problem or do I need to re-write the whole code?
The main problem is if you write [“11 + 4”, “3801 - 2999”, “1 + 2”, “123 + 49”, “1 - 9380”], True
The values in the bottom don’t seem to be alined with the ones at the top

4

You are supposed to check if there are more than 4 problems and your if statement checks if there are more than 5.

5

Wait but in the rules they say

  • Situations that will return an error:
    • If there are too many problems supplied to the function. The limit is five, anything more will return:
      `Error: Too many problems.
6

Sorry! I just read the comment that said “more than 4”, I forgot what the actual rules were.

7

Haha, My code is pretty hard to understand. Might need improve there
No worrys

8

No, you just need to fix the newlines. If you look at the error, you’ll see that yours (the first one) is different than what is expected (the second one).

9

I don’t really know how that’s the problem. I’m not so good with that I’m only good with algorithm and maths

10

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