Can't get my hangman program to exit loop to win!

import random
dictionary=['ABRUPT','BLITZ','BUCCANEER','CROISSANT','BEFUDDLE','GIZMO','HAIKU','JOVIAL','NUMB','SQUAWK','THE','  MAGIC','ARTIST','TRAVEL','NOWADAYS','ITALIAN','MOUSTACHE','GLOOMY','STARTLED','AMBIGUOUS','GREEN','N  UMBER','HANDYMAN','RATCHET','BOILED','ENCRUSTED','AROUND','CHIMPANZEE','PARAKEET','BOOTSTRAPS']
difficulty=str(input("would you like an easy, medium, or hard word?"))
for word in dictionary:
    if difficulty == "easy":
        word=random.choice(dictionary[21:31])
    elif difficulty=="medium":
        word=random.choice(dictionary[11:21])
    elif difficulty=="hard":
        word=random.choice(dictionary[0:11])
wordLength=len(word)
wrongGuesses=''
rightGuesses=''
numGuesses=0
guesses=wordLength*[' _ ']
alreadyGuessed=''
maxWrong=6
gamePoints=rightGuesses
gameOver=numGuesses>=maxWrong



def whatLevel(difficulty):
    if difficulty == "easy":
        print(word)
    elif difficulty == "medium":
        print(word)
    elif difficulty == "hard":
         print(word)
        
    else:
        print("Error: Please try again and type in 'easy', 'medium', or 'hard' for your difficulty level:")

def printRules(maxWrong, wordLength):
    wordLength=1
    print("Guess the word in 7 tries!")
    return
def getGuess():
    print
    guess=input("Guess a CAPITAL letter: ")
    guess.strip()
    guess.upper()
    print()
    return guess
  

printRules(maxWrong, wordLength)


def nextGame():
    playAgainResponse=input('Play Again?')
    if input==("Yes"):
        difficulty
        wrongGuesses=''
        rightGuesses=''
        gamePoints=gamePoints+rightGuesses
    


while not gameOver:
    letter=getGuess()
    if len(letter)==1 and letter in 'ABCDEFGHIJKLMNOPQRSTUVWXYZ':
        if alreadyGuessed.find(letter)!= -1:
            print ("You already picked", letter)
        else:
            alreadyGuessed=alreadyGuessed+letter
            firsttryWord=word.find(letter)
            if firsttryWord==-1:
                wrongGuesses=wrongGuesses+letter
                print("Oops! ",letter,"is not in the word.")
            else:
                print("Yes! ",letter,"is in the word!")
                rightGuesses=rightGuesses+letter
                for instances in range(wordLength):
                    if letter == word[instances]:
                        guesses[instances]=letter
                
                    
    else:
        print("Please guess a single alphabetical letter!")
    print(''.join(guesses))
    print ("Missed Letters: ", wrongGuesses)
    if len(wrongGuesses)==maxWrong:
        print ("You lose!")
        print("The word was "+word)
        print("You have "+gamePoints+" points!")
        gameOver
        nextGame()

if letter in word:
        rightGuesses= rightGuesses+letter
        if word == letter:
            allLettersFound=True
for i in range(wordLength):
        if word not in rightGuesses:
            allLettersFound=False
            break
        if allLettersFound:
            print("You win!")
            print("The word was", word, "You have",gamePoints,"points!")
            gameOver
            nextGame()
            break

            

getGuess()
nextGame()

while not gameOver:
    letter=getGuess()


def getGuess():
    print
    guess=input("Guess a CAPITAL letter: ")
    guess.strip()
    guess.upper()
    print()
    return guess


if letter in word:
        rightGuesses= rightGuesses+letter
        if word == letter:
            allLettersFound=True

# python 3

# re-implement with sets.  Many of the hangman algorithmic needs are mathematically set operations.

from sys import version, exit
assert '3' == version[0]
from random import choice
from string import ascii_uppercase

dictionary=['ABRUPT','BLITZ','BUCCANEER','CROISSANT','BEFUDDLE','GIZMO','HAIKU','JOVIAL','NUMB','SQUAWK','THE','    MAGIC','ARTIST','TRAVEL','NOWADAYS','ITALIAN','MOUSTACHE','GLOOMY','STARTLED','AMBIGUOUS','GREEN','N    UMBER','HANDYMAN','RATCHET','BOILED','ENCRUSTED','AROUND','CHIMPANZEE','PARAKEET','BOOTSTRAPS']

difficulty=str(input("would you like an easy, medium, or hard word?  "))

# REMOVED LOOP
if difficulty == "easy":
    word = choice(dictionary[21:31])
elif difficulty=="medium":
    word = choice(dictionary[11:21])
elif difficulty=="hard":
    word = choice(dictionary[0:11])
else:                                     # INSERTED ERROR TRAP
    print('run the program again, next time choose one of easy medium hard .')
    exit(1)

wordLength=len(word)
wrongGuesses=''                           # should be a set
rightGuesses=''                           # should be a set
guesses=wordLength*[' _ ']
alreadyGuessed=''                         # should be a set
maxWrong=6
# DISCARDED GAMEPOINTS

def lost(mistakes,maxWrong):
    return maxWrong <= len(mistakes)

def won(rightGuesses,word):
    return set(rightGuesses) == set(word)

# YOU HAD USED gameOver AS IF ... NEVER MIND.  LEARN TO DEFINE AND CALL FUNCTIONS
def gameOver(rightGuesses,word,mistakes,maxWrong):
    '''
        return lost or won.  How simple.
    '''
    return lost(mistakes,maxWrong) or won(rightGuesses,word)

# REMOVED UNUSED DEFINITION
# whatLevel(difficulty):

def printRules(maxWrong, wordLength):  # IMPROVED
    print('Guess the',wordLength,'letter word,')
    print('one letter at a time.  Guess the word')
    print('before making',maxWrong,'erros to win.')

def getGuess():
    # print   # REMOVED INEFFECTIVE PYTHON 3 STATEMENT
    guess = input("Guess a letter: ")  # REPAIRED PROMPT
    # REMOVED INEFFECTIVE STATEMENTS
    # guess.strip() # str.strip() returns a new value, does not change the immutable string
    # guess.upper() # str.upper() same as .strip()
    print()
    return guess   .strip().upper()  # INSERTED YOUR INTENT

printRules(maxWrong, wordLength)

# REMOVED NEXT GAME OPTION.

while not gameOver(rightGuesses,word,wrongGuesses,maxWrong):  # CALL THIS FUNCTION
    letter = getGuess()
    if len(letter)==1 and letter in ascii_uppercase:
        if alreadyGuessed.find(letter) != -1:
            print ("You already picked", letter)
        else:
            alreadyGuessed += letter
            firsttryWord = word.find(letter)
            if firsttryWord == -1:
                wrongGuesses += letter
                print("Oops! ",letter,"is not in the word.")
            else:
                print("Yes! ",letter,"is in the word!")
                rightGuesses += letter
                for instances in range(wordLength):
                    if letter == word[instances]:
                        guesses[instances]=letter
    else:
        print("Please guess a single alphabetical letter!")
    print(''.join(guesses))
    print ("Missed Letters: ", wrongGuesses)

if won(rightGuesses,word):
    print('You win!')
else:
    print ("You lose!")
    print("The word was "+word)

# REMAINDER OF PROGRAM REMOVED

# To program for multiple games encapsulate this into a function,
# which returns a score or whatever,
# and call the function in a loop.