**Tell us what’s happening:**

The code is already working but it keeps printing this:

**Console**

```
32 3801 45 123
+ 698 - 2 + 43 + 49
----- ------ ---- -----
730 3799 88 172
F.....
======================================================================
FAIL: test_arrangement (test_module.UnitTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "D:\Documents\Personal\Education\Programming\Python\ArithmeticFormatter\test_module.py", line 10, in test_arrangement
self.assertEqual(actual, expected,
AssertionError: ' [68 chars]- ------ ---- -----\n 858 3799 88 172' != ' [68 chars]- ------ ---- -----'
3 3801 45 123
+ 855 - 2 + 43 + 49
- ----- ------ ---- -----
? -
+ ----- ------ ---- ------ 858 3799 88 172 : Expected different output when calling "arithmetic_arranger()" with ["3 + 855", "3801 - 2", "45 + 43", "123 + 49"]
----------------------------------------------------------------------
Ran 6 tests in 0.014s
FAILED (failures=1)
```

This is my code so far.

**Your code so far**

```
def arithmetic_arranger(problems, op_par=False):
first = ""
second = ""
answer = ""
line = "-"
lines = ''
# ERROR #
# TOO MANY PROBLEMS (LIMIT IS 5)
if len(problems) >= 6:
return 'Error: Too many problems.'
for i in problems:
operation = i.split()
first_number = operation[0]
operator_digit = operation[1]
second_number = operation[2]
# ERROR #
# NUMBER HAS MORE THAN 4 DIGITS
if len(first_number) > 4 or len(second_number) > 4:
return "Error: Numbers cannot be more than four digits."
# ERROR #
# NUMBER CONTAINS A LETTER CHARACTER
if not first_number.isnumeric() or not second_number.isnumeric():
return "Error: Numbers must only contain digits."
# ERROR #
# OPERATOR IS '/' OR '*'
if operator_digit == '+' or operator_digit == '-':
if operator_digit == '+':
result = str(int(first_number) + int(second_number))
else:
result = str(int(first_number) - int(second_number))
length = max(len(first_number), len(second_number)) + 2
top_line = first_number.rjust(length)
bottom_line = operator_digit + second_number.rjust(length - 1)
result_line = result.rjust(length)
if i != problems[-1]:
first += top_line + ' '
second += bottom_line + ' '
lines += line*length + ' '
answer += result_line + ' '
else:
first += top_line
second += bottom_line
lines += line * length
answer += result_line
else:
return "Error: Operator must be '+' or '-'."
first.rstrip()
second.rstrip()
lines.rstrip()
if op_par:
arranged_problems = first + "\n" + second + "\n" + lines + "\n" + answer
else:
arranged_problems = first + "\n" + second + "\n" + lines
return arranged_problems
```

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.

**Challenge:** Arithmetic Formatter

**Link to the challenge:**