Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

Python
1

Tell us what’s happening:

I have already finished the code but only the error part of the test case is right even the out of the code is accurate

Your code so far

def arithmetic_arranger(problems, show_answers=True):
    operator=[]
    operand=[]
    upper_nums=[]
    bottom_nums=[]
    final_answer=[]
    result=[]
    str_upper=''
    str_bottom=''
    str_dash=' '
    str_result=''
    if len(problems)>4:
        return 'Error: Too many problems.'
    
    for exp in problems:
        element=exp.split()
        operator.append(element[1])
        operand.append(element[0])
        operand.append(element[2])
    for sign in operator:
        if sign in ['/','*']:
            return "Error: Operator must be '+' or '-'."
    for nums in operand:
        if not nums.isdigit():
            return 'Error: Numbers must only contain digits.'
        if len(nums)>4:
            return 'Error: Numbers cannot be more than four digits.'
    
    for i in range(0,len(operand),2):
        upper_nums.append(operand[i])
    for i in range(1,len(operand),2):
        bottom_nums.append(operand[i])
    
    for i in range(len(upper_nums)):
        if len(upper_nums[i]) > len(bottom_nums[i]):
            str_upper+=''.join('   '+upper_nums[i])
            str_bottom+=''.join(''+ ' ' + operator[i] +' '+' '*(len(upper_nums[i])-len(bottom_nums[i])) + bottom_nums[i])
            str_dash+=' '+(len(upper_nums[i])+2)*'-'
        elif len(upper_nums[i]) < len(bottom_nums[i]):
            str_bottom+=''.join(' '+ operator[i]+' '+bottom_nums[i])
            str_upper+=''.join('   '+' '*(len(bottom_nums[i])-len(upper_nums[i])) + upper_nums[i])
            str_dash+=' '+(len(bottom_nums[i])+2)*'-'
        else:
             str_bottom+=''.join(' '+operator[i]+' '+bottom_nums[i])
             str_upper+=''.join('   '+ upper_nums[i])
             str_dash+=' '+(len(upper_nums[i])+2)*'-'
         
        str_bottom+='   '
        str_upper+='   ' 
        str_dash+='   '

    for i in range(len(operator)) :
        if operator[i]=='-' :
            result.append(str(int(upper_nums[i])-int(bottom_nums[i])))
        else:
            result.append(str(int(upper_nums[i])+int(bottom_nums[i])))
    for j in range(len(result)):
        if len(bottom_nums[j])<len(upper_nums[j]) and len(result[j])<len(upper_nums[j]):
            str_result+= (len(upper_nums[j])-len(rsult[j])+2)*' '+''.join(result[j])
        elif len(upper_nums[j])<len(bottom_nums[j]) and len(result[j])<len(bottom_nums[j]):
            str_result+= (len(bottom_nums[j])-len(rsult[j])+2)*' '+''.join(result[j])
        else:
            str_result+= 3*' '+''.join(result[j])
        str_result+='   '
    str_upper+='\n'
    str_bottom+='\n' 
    str_dash+='\n' 
    str_result+='\n'  

    
    final_answer = str_upper + str_bottom + str_dash + str_result
    if show_answers:
        return final_answer
print(f'\n{arithmetic_arranger(["3801 - 2", "123 + 49"])}')

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Challenge Information:

Build an Arithmetic Formatter Project - Build an Arithmetic Formatter Project

2

try calling the function using repr like this: print(repr(arithmetic_arranger(["3801 - 2", "123 + 49"])))

so you can see that your function return
' 3801 123 \n - 2 + 49 \n ------ ----- \n 3799 172 \n'

but the requested value is
' 3801 123\n- 2 + 49\n------ -----'

you have spacing issues, and the answer is appearing when it should not