title: TypeError: unsupported operand int and NoneType? Python
body: <p>I'm writing a blackjack game for my class and I cannot seem to figure out what is wrong with the code at all, maybe I'm just staring at it too long but any help would be appreciated</p>
  
  <pre><code>def payout(betAmount):
      global option1
      if option1 == "1":
          betAmount*1.5
          return int(betAmount)
      elif option1 == "2":
          betAmount*=1.25
          return int(betAmount)
      elif option1 == "3":
          betAmount*=1.2
          return int(betAmount)
  </code></pre>
  
  <p>followed by this:</p>
  
  <pre><code>winning=payout(bet)
  playerPool+=winning
  </code></pre>
  
  <p>sorry about that, the full code is:</p>
  
  <pre><code>import random, pickle
  
  option1=None
  
  def payoutRule():
      global option1
      pick=None
      while pick != "1" or "2" or "3":
          pick=input("""
  What is the house payout you want to play with?
  
  1- 3:2 (1.5X)
  2- 5:4 (1.25X)
  3- 6:5 (1.2X)\n
  """)
  
          if pick == "1":
              option1=1
              break
          elif pick == "2":
              option1=2
              break
          elif pick == "3":
              option1=3
              break
          else:
              print("That is not a valid option!\n")
  
  def payout(betAmount):
      global option1
      if option1 == "1":
          betAmount*1.5
          return int(betAmount)
      elif option1 == "2":
          betAmount*=1.25
          return int(betAmount)
      elif option1 == "3":
          betAmount*=1.2
          return int(betAmount)
  
  def hitDeck():
      CARDS=(2, 3, 4, 5, 6, 7, 8, 9, 10, 10, 10, 10, 11)
  
      drawCard=random.choice(CARDS)
      return drawCard
  
  def aceCounter(hand):
      aces=hand.count(11)
      total=sum(hand)
      if total &gt; 21 and aces &gt; 0:
          while aces &gt; 0 and total &gt; 21:
              total-=10
              aces-=1
      return total
  
  
  def main():
      print("\t\tWelcome to the Blackjack Table!")
      payoutRule()
      playerPool=int(250)
  
      while True:
          playerCard=[]
          dealerCard=[]
  
          playerBust=False
          dealerBust=False
          endGame=None
          bet=None
  
          playerCard.append(hitDeck())
          playerCard.append(hitDeck())
          print("You have", playerPool, "dollars to play with.")
  
          while True:
              bet=input("""
  How much are you betting?
  \t1- $5
  \t2- $10
  \t3- $25
  """)
              if bet == "1":
                  print("You put down $5 on the table.")
                  bet=int(5)
                  break
              elif bet == "2":
                  print("You put down $10 on the table.")
                  bet=int(10)
                  break
              elif bet == "3":
                  print("You put down $25 on the table.")
                  bet=int(25)
                  break
              else:
                  print("That is not a valid choice!")
  
          while endGame != "1":
              totalPlayer=aceCounter(playerCard)
              print("You have", len(playerCard), "cards with a total value of", totalPlayer)
              if totalPlayer &gt; 21:
                  print("You are busted!")
                  playerBust=True
                  break
              elif totalPlayer == 21:
                  print("You've got a blackjack!!!")
                  break
              else:
                  hit=input("""
  Would you like to:
  \t1- Hit
  \t2- Stand
  """)
                  if "1" in hit:
                      playerCard.append(hitDeck())
                  elif "2" in hit:
                      break
                  else:
                      print("That is not a valid choice!")
          while True:
              dealerCard.append(hitDeck())
              dealerCard.append(hitDeck())
              while True:
                  totalDealer=aceCounter(dealerCard)
                  if totalDealer  &lt;= 17:
                      dealerCard.append(hitDeck())
                  else:
                      break
              print("The dealer has", len(dealerCard), "cards with a total value of", totalDealer)
              if totalDealer &gt; 21:
                  print("The dealer busted!")
                  dealerBust=True
                  if playerBust == False:
                      winning=payout(bet)
                      print("You won!")
                      print("You just won", winning, "dollars!")
                      playerPool+=winning
                  elif playerBust == True:
                      print("You both busted but the house will still collect.")
                      print("You just lost", bet, "dollars...")
                      playerPool-=bet
              elif totalPlayer &gt; totalDealer:
                  if playerBust == False:
                      winning=payout(bet)
                      print("You won!")
                      print("You just won", winning, "dollars!")
                      playerPool+=winning
                  if playerBust == True:
                      print("The dealer won!")
                      print("You just lost", bet, "dollars...")
                      playerPool-=bet
              elif totalPlayer == totalDealer:
                  print("It's a draw, but the house still wins.")
                  print("You just lost", bet, "dollars...")
                  playerPool-=bet
              elif totalPlayer &lt; totalDealer:
                  print("The dealer won!")
                  print("You just lost", bet, "dollars...")
                  playerPool-=bet
              break
  
          if playerPool == 0:
              print("You don't have anymore money to play with!")
              break
          elif playerPool &lt; 0:
              print("You owe the house", -playerPool, "dollars, time to work in the kitchen...")
              break
          print("You have", playerPool, "dollars in your pocket now.")
          playAgain=input("Press the Enter key to play again or 'q' to quit.\n")
          if "q" in playAgain.lower():
              break
  </code></pre>
  
  <p>The actual error is this:</p>
  
  <p>Traceback (most recent call last):
    File "C:\Users\Daniel\Desktop\Software Design\Culminating project revised2.py", line 175, in main()</p>
  
  <p>File "C:\Users\Daniel\Desktop\Software Design\Culminating project revised2.py", line 140, in main
      playerPool+=winning</p>
  
  <p>TypeError: unsupported operand type(s) for +=: 'int' and 'NoneType'</p>