title: TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'
body: <p>I made this as a fun little practice with my beginner coding knowledge in python 3.5.</p>
  
  <pre><code>def potato_quant(number):
      if number &gt;= 5 and number &lt; 100:
          print("You've got more than 5 potatoes. Making a big meal eh?")
      elif number &gt;= 100 and number &lt; 10000:
          print("You've got more than 100 potatoes! What do you need all those potatoes for?")
      elif number &gt;= 10000 and number &lt; 40000:
          print("You've got more than 10000! Nobody needs that many potatoes!")
      elif number &gt;= 40000:
          print("You've got more than 40000 potatoes. wut.")
      elif number == 0:
          print("No potatoes eh?")
      elif number &lt; 5:
          print("You've got less than five potatoes. A few potatoes go a long way.")
      else:
          return 0
   def potato_type(variety):
       if variety == "Red":
          print("You have chosen Red potatoes.")
       elif variety == "Sweet":
          print("You have chosen the tasty sweet potato.")
       elif variety == "Russet":
            print("You've got the tasty average joe potatoe!")
       else:
            print("Nice potato!")
  
  print(potato_quant(15000) + potato_type("Sweet"))
  </code></pre>
  
  <p>The goal of the code was to input two values and get two strings based on my choice. However, when I run the code I get the error:</p>
  
  <pre><code>TypeError: unsupported operand type(s) for +: 'NoneType' and 'NoneType'
  </code></pre>
  
  <p>I'm very much a beginner, so no matter how much I look over this I can't see what's wrong. Any help would be very much appreciated, mostly for future use.</p>