Few small updates and moved into it's own function

RouletteSingleNumberGame.py

@@ -1,46 +1,51 @@
 import random
 import time
 
-balance = 100
-spins = 0
-guess = 0
 
-
-while guess != "exit":
-    number = random.randint(0,36)
-    guess = input("Welcome to roulette, what number would you like to place a bet on? Type 'exit' to leave     ")
-    if guess == "exit":
-        print "Thanks for playing, your final balance is",balance,"and have stayed for",spins,"plays"
-        break
-    if guess > 36 or guess < 0:
-        print "That number is not on the table"
-    else: 
-         print 'You have',balance,"remaining"
-         bet = input("How much would you like to bet?     ")
-         if bet > balance:
-             print "You don't have enough money for that bet"
-
-
-
-
+def play():
+    balance = 100
+    spins = 0
+    guess = 0
 
-
-    if 0 < bet <= balance and 0 <= guess <= 36:
-        print "You have bet",bet   
-        guess = int(guess)
-        spins += 1
-        print '**Spinning**'
-        time.sleep(3)
-        if guess == number:
-            print "Congratulations, it landed on",number,", you win!!"
-            balance += bet*36
-            print "Your new balance is",balance
-
+    while guess != "exit":
+        number = random.randint(0, 36)
+        try:
+            guess = int(input("Welcome to roulette, what number would you like to place a bet on? Type 'exit' to leave     "))
+        except ValueError:
+            continue
+        if guess == "exit":
+            print("Thanks for playing, your final balance is", balance, "and have stayed for", spins, "plays")
+            break
+        if guess > 36 or guess < 0:
+            print("That number is not on the table")
         else:
-            print "Sorry, it landed on",number,", better luck next time"
-            balance += -bet
-            if balance > 0:
-                print "Your new balance is",balance
+            print('You have', balance, "remaining")
+            try:
+                bet = int(input("How much would you like to bet?     "))
+            except ValueError:
+                bet = 0
+            if bet > balance:
+                print("You don't have enough money for that bet")
+
+        if 0 < bet <= balance and 0 <= guess <= 36:
+            print("You have bet", bet)
+            guess = int(guess)
+            spins += 1
+            print('**Spinning**')
+            time.sleep(3)
+            if guess == number:
+                print("Congratulations, it landed on", number, ", you win!!")
+                balance += bet * 36
+                print("Your new balance is", balance)
+
             else:
-                print "Sorry, you are out of cash"
-                break
+                print("Sorry, it landed on", number, ", better luck next time")
+                balance += -bet
+                if balance > 0:
+                    print("Your new balance is", balance)
+                else:
+                    print("Sorry, you are out of cash")
+                    break
+
+if __name__ == "__main__":
+    play()