Tell us what’s happening:
When I disable test_module.py, I get the following output:
32 3801 45 123
+ 698 - 2 + 43 + 49
----- ------ ---- -----
If I then add True to the print statement, I get the following:
32 3801 45 123
+ 698 - 2 + 43 + 49
----- ------ ---- -----
730 3799 88 172
Looks right to me, but when I enable the test module, I get:
32 3801 45 123
+ 698 - 2 + 43 + 49
----- ------ ---- -----
F..F..
======================================================================
FAIL: test_arrangement (test_module.UnitTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/runner/boilerplate-arithmetic-formatter-5/test_module.py", line 10, in test_arrangement
self.assertEqual(actual, expected, 'Expected different output when calling "arithmetic_arranger()" with ["3 + 855", "3801 - 2", "45 + 43", "123 + 49"]')
AssertionError: ' [23 chars] 123 \n+ 855 - 2 + 43 + 49 [35 chars] ' != ' [23 chars] 123\n+ 855 - 2 + 43 + 49\n-----[23 chars]----'
- 3 3801 45 123
? ----
+ 3 3801 45 123
- + 855 - 2 + 43 + 49
? ----
+ + 855 - 2 + 43 + 49
- ----- ------ ---- ----- ? ----
+ ----- ------ ---- ----- : Expected different output when calling "arithmetic_arranger()" with ["3 + 855", "3801 - 2", "45 + 43", "123 + 49"]
======================================================================
FAIL: test_solutions (test_module.UnitTests)
----------------------------------------------------------------------
Traceback (most recent call last):
File "/home/runner/boilerplate-arithmetic-formatter-5/test_module.py", line 39, in test_solutions
self.assertEqual(actual, expected, 'Expected solutions to be correctly displayed in output when calling "arithmetic_arranger()" with arithmetic problems and a second argument of `True`.')
AssertionError: ' 3[23 chars] 123 \n- 698 - 3801 + 43 + 49 [73 chars] ' != ' 3[23 chars] 123\n- 698 - 3801 + 43 + 49\n-----[57 chars] 172'
- 32 1 45 123
? ----
+ 32 1 45 123
- - 698 - 3801 + 43 + 49
? ----
+ - 698 - 3801 + 43 + 49
- ----- ------ ---- -----
? ----
+ ----- ------ ---- -----
- -666 -3800 88 172 ? ----
+ -666 -3800 88 172 : Expected solutions to be correctly displayed in output when calling "arithmetic_arranger()" with arithmetic problems and a second argument of `True`.
----------------------------------------------------------------------
Ran 6 tests in 0.004s
FAILED (failures=2)
Your code so far
def arithmetic_arranger(problems, solve = False):
arranged_problems = ""
firsts, operators, seconds, widths, answers = [], [], [], [], []
if len(problems) > 5:
return "Error: Too many problems."
# Tokenize strings
for p in problems:
# Operator check
if p.find(" + ") != -1:
part = p.partition(" + ")
elif p.find(" - ") != -1:
part = p.partition(" - ")
else:
return "Error: Operator must be '+' or '-'."
# Operand syntax check
if (part[0].isdigit() and part[2].isdigit()) == False:
return "Error: Numbers must only contain digits."
# Operand size check
if len(part[0]) > 4 or len(part[2]) > 4: return "Error: Numbers cannot be more than four digits."
#Pass it out of the loop
firsts.append(part[0])
operators.append(part[1].strip())
seconds.append(part[2])
widths.append(max(len(part[0]), len(part[2])) + 2)
if part[1] == " + ":
answers.append(str(int(part[0]) + int(part[2])))
elif part[1] == " - ":
answers.append(str(int(part[0]) - int(part[2])))
# Fill top row
for i in range(len(problems)):
arranged_problems += firsts[i].rjust(widths[i], ' ')
if i < len(problems): arranged_problems += " "
arranged_problems += '\n'
#Fill middle row
for i in range(len(problems)):
arranged_problems += operators[i] + ' ' + seconds[i].rjust(widths[i] - 2, ' ')
if i < len(problems): arranged_problems += " "
arranged_problems += '\n'
#Fill bottom row
for i in range(len(problems)):
for j in range(widths[i]):
arranged_problems += '-'
if i < len(problems): arranged_problems += " "
if solve:
arranged_problems += '\n'
for i in range(len(problems)):
arranged_problems += answers[i].rjust(widths[i], ' ')
if i < len(problems): arranged_problems += " "
return arranged_problems
Your browser information:
User Agent is: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:90.0) Gecko/20100101 Firefox/90.0
Challenge: Arithmetic Formatter
Link to the challenge:
