durr.py

def prompt_user_select_difficulty(diffs_available):
  difficulty_selected = raw_input(
    "Please choose a difficulty:"
      "\n\teasy"
      "\n\tmedium"
      "\n\thard"
      "\n\texit\n> ").lower()

  while difficulty_selected not in diffs_available:
    difficulty_selected = raw_input("Please enter a valid difficulty\n> ").lower()

  return difficulty_selected

def prompt_user_answer_challenge(prompt, answer_key):
  print("Here's your clue!")
  print(prompt)

  user_answers = raw_input("Please enter your answers: __1__, __2__\n> ").split(',')
  wrong_answer_count = 0

  for i in range(0, len(answer_key)):
    if user_answers[i].strip() != answer_key[i]:
      wrong_answer_count += 1
    else:
      print("Correct!")

  return wrong_answer_count

def play_game():
  difficulties_available = ['easy', 'medium', 'hard', 'exit']

  answers_for = {
    'easy': ['1','2','3', '4', '5'],
    'medium': [],
    'hard': []
  }

  prompts_for = {
    'easy': '1, 2, 3, 4, 5',
    'medium': 'Medium prompt',
    'hard': 'Hard prompt'
  }

  difficulty_selected = prompt_user_select_difficulty(difficulties_available)

  if difficulty_selected != 'exit':
    wrong_answer_count = prompt_user_answer_challenge(
      prompts_for[difficulty_selected],
      answers_for[difficulty_selected]
    )
    print("You got {0} wrong answers".format(wrong_answer_count))
  else:
    print('Bye')

play_game()