Tell us what’s happening:
Hello, I am failing the test_arrangement and test_solutions tests. It seems to output fine in the arithmetic_arranger file. Also, this is my first experience with unit testing…
Your code so far
import re # regular expressions
def arithmetic_arranger(problems, with_results = False):
if len(problems) > 5:
return "Error: Too many problems."
arranged_problems = [[], [], [], []]
for problem in problems:
if "*" in problem or "/" in problem:
return "Error: Operator must be '+' or '-'."
if re.search("[a-zA-Z]", problem) != None or "." in problem:
return "Error: Numbers must only contain digits."
if "+" in problem or "-" in problem:
number_1 = re.split("\+|\-", problem)[0].strip()
number_2 = re.split("\+|\-", problem)[1].strip()
if len(number_1) > 4 or len(number_2) > 4:
return "Error: Numbers cannot be more than four digits."
# No user error...
# Line 1...
arranged_problems[0].append(number_1)
# Line 2...
arranged_problems[1].append(number_2)
# Line 3
if (max(len(number_1), len(number_2))) == 1:
arranged_problems[2].append("---")
elif (max(len(number_1), len(number_2))) == 2:
arranged_problems[2].append("----")
elif (max(len(number_1), len(number_2))) == 3:
arranged_problems[2].append("-----")
elif (max(len(number_1), len(number_2))) == 4:
arranged_problems[2].append("------")
# Line 4
if with_results == True:
if "+" in problem:
arranged_problems[3].append(str(int(number_1) + int(number_2)))
elif "-" in problem:
arranged_problems[3].append(str(int(number_1) - int(number_2)))
line_one = arranged_problems[0]
line_two = arranged_problems[1]
line_three = arranged_problems[2]
line_four = arranged_problems[3]
problem_width = []
for element in line_three:
problem_width.append(len(element))
# Output formatting with \n character...
separator = " "
for i in range(len(problems)):
if line_one[i] != line_one[-1]:
print(line_one[i].rjust(problem_width[i]), end = separator)
else:
print(line_one[i].rjust(problem_width[i]), end = "\n")
for i in range(len(problems)):
if "+" in problems[i]:
if line_two[i] != line_two[-1]:
print("+" + line_two[i].rjust(problem_width[i] - 1), end = separator)
else:
print("+" + line_two[i].rjust(problem_width[i] - 1), end = "\n")
elif "-" in problems[i]:
if line_two[i] != line_two[-1]:
print("-" + line_two[i].rjust(problem_width[i] - 1), end = separator)
else:
print("-" + line_two[i].rjust(problem_width[i] - 1), end = "\n")
if with_results == True:
print(separator.join(line_three), end = "\n")
else:
print(separator.join(line_three))
if with_results == True:
for i in range(len(problems)):
if line_four[i] != line_four[-1]:
print(line_four[i].rjust(problem_width[i]), end = separator)
else:
print(line_four[i].rjust(problem_width[i]), end = "\n")
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Challenge: Arithmetic Formatter
Link to the challenge:
