Scientific Computing with Python Projects - Arithmetic Formatter

Python
1

Tell us what’s happening:
Assertion error when running code against tests. Even though when testing string outputs are the same as the expected outputs in the testing file.

Your code so far

def arithmetic_arranger(problems, *args):

  

  #problems = (['32 - 698', '1 - 3801', '45 + 43', '123 + 49', '988 + 40'])
  number1 = 0
  number2 = 0
  operand = ""
  line1 = ""
  line2 = ""
  line3 = ""
  line4 = ""
  spaces = 0
  indent = "   "
  sumx = 0

  if len(problems) > 5:
      return"Error: Too many problems."

  #array split into seperate numbers and operators
  for item in problems:
      item = item.split()
      number1 = item[0].strip(" ")
      number2 = item[2].strip(" ")
      operand = item[1].strip(" ")
      try:
          int(number1)
          int(number2)
      except:
          return"Error: Operator must be '+' or '-'.'"
          break
      if len(number1) > 4 or len(number2) > 4:
          return"Error: Numbers cannot be more than four digits."
          break
      if operand == "*" or operand == "/":
          return"Error: Operator must be '+' or '-'."
          break
      if  operand == '+':
          sumx = str(int(number1) + int(number2))
      elif operand == "-":
          sumx = str(int(number1) - int(number2))
      spaces = max(len(number1), len(number2))+2

      line1 += str(number1).rjust(spaces)
      line2 += str(operand + number2.rjust(spaces-1))
      line3 += ('-' * spaces)
      line4 += str(sumx).rjust(spaces)
        

      if item != problems[-1]:
          line1 += "    "
          line2 += "    "
          line3 += "    "
          line4 += "    "

      if args: 
        arranged_problems = line1 + "\n" + line2 + "\n" + line3 + "\n" + line4
      else:
        arranged_problems = line1 + "\n" + line2 + "\n" + line3
  print(arranged_problems)
 
  
  return arranged_problems

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Challenge: Scientific Computing with Python Projects - Arithmetic Formatter

Link to the challenge:

2

It is hard to guess without the test output. Can you provide the diffs?

4

Yes I just figured this out after replacing the indents with “aaaa”

5

Also the condition where I was breaking from appending " " to each string wasnt being met as I had assigned item the split value of the array straight after starting the loop.

All passed now, definately not the most elegant solution but it works!

6

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