title: Cannot find error trying to convert zipcode to binary
body: <p>Here is my code I feel like this should be working. I added the zipcode = str(zipcode) just now to see if it would work which it didnt so I will probably take that out and just have the original zipcode be a string. I need it to be a string because I dont want the binary numbers to actually add to eachother. When I initialize the function in the python shell it just returns nothing</p>
  
  <pre><code>def digitConvert(zipcode):
  zipcode = str(zipcode)
  n = 0
  binary = ""
  while n &lt; len(zipcode):
      if zipcode[n] == 0:
          binary = binary + "11000"
          n = n + 1
      elif zipcode[n] == 1:
          binary = binary + "00011"
          n = n + 1
      elif zipcode[n] == 2:
          binary = binary + "00101"
          n = n + 1
      elif zipcode[n] == 3:
          binary = binary + "00110"
          n = n + 1
      elif zipcode[n] == 4:
          binary = binary + "01001"
          n = n + 1
      elif zipcode[n] == 5:
          binary = binary + "01010"
          n = n + 1
      elif zipcode[n] == 6:
          binary = binary + "01100"
          n = n + 1
      elif zipcode[n] == 7:
          binary = binary + "10001"
          n = n + 1
      elif zipcode[n] == 8:
          binary = binary + "10010"
          n = n + 1
      elif zipcode[n] == 9:
          binary = binary + "10100"
          n = n + 1
  return binary
  </code></pre>
  
  <p>Thanks for any help!</p>