title: Why do my python dictionaries keep overwriting
body: <p>What I am trying to do is create a dictionary within a dictionary. It is supposed to be a movie lover's club in which you can add movies to a member's account, but when I try to add it, it gets overwritten. 
  Below is my code:</p>
  
  <pre><code>import sys
  
  movies = {}
  
  
  def option_one():
      print('Club Members')
      print('=' * 12)
      for name in movies:
          print(name)
      application()
  
  
  def option_two():
      name = input('Please enter the user\'s name: ')
      for movie in movies[name]:
          title = movies[name][movie]
          watch = movies[name][movie]['Watched']
          rate = movies[name][movie]['Rating']
          print('Movie', 'Rating', 'Watched', sep=' ' * 5)
          print('=' * 30)
  
          print(movie, movies[name][movie]['Rating'], movies[name][movie]['Watched'], sep=' ' * 8)
  
      application()
  
  
  def option_three():
      name = input('Please enter the member\'s name: ')
  
      if name in movies:
          movie = input('Please enter the name of the movie: ')
          movies[name][movie]['Watched'] = movies[name][movie]['Watched'] + 1
          for movie in movies[name]:
              if movie not in movies[name][movie]:
                  print('Movie not found. ')
              else:
                  print('Times watched incremented. ')
      else:
          print('Sorry, member not found. ')
      application()
  
  
  def option_four():
      name = input('Please enter the member\'s name: ')
  
      # if the name exists in movies add the movie
      if name in movies:
          # enter information and update dictionary
          movie_title = input('Enter movie name: ')
          times_watched = int(input('Enter times watched: '))
          rating = input('Enter rating: ')
          add_movie = {name: {movie_title: {'Watched': times_watched,
                                            'Rating': rating}}}
          movies.update(add_movie)
          print('Movie added')
  
      # if name not in movies print member not found call option 4 again
      else:
          print('Member not found')
          option_four()
      application()
  
  
  def option_five():
      name = input('Enter new member name: ')
      nameDict = {name: ''}
  
      # update the movies dictionary with name dictionary as key
      movies.update(nameDict)
      print('Member added')
      application()
  
  
  def application():
      print('=' * 33)
      print('Movie Lover\'s club')
      print('=' * 33)
      print('1. Display all club_members.')
      print('2. Display all movie information for a member.')
      print('3. Increment the times a specific movie was watched by a member.')
      print('4. Add a movie for a member.')
      print('5. Add a new member.')
      print('6. Quit')
      print('=' * 33)
  
      # get name input for selection
      name_selection = (input('Please enter a selection: '))
  
      # if statement directing name choice to corresponding method
      if name_selection == '1':
          option_one()
  
      if name_selection == '2':
          option_two()
  
      if name_selection == '3':
          option_three()
  
      if name_selection == '4':
          option_four()
  
      if name_selection == '5':
          option_five()
  
      if name_selection == 'Q':
          print('=' * 33)
          print('Thank you for using Movie Lover\'s Club')
          print('=' * 33)
          sys.exit()
      else:
          input('Pick a number between 1 and 5 or Q to exit program. Press enter to continue.')
  
  
  application()
  
  </code></pre>
  
  <p>The code above is working as expected but it will not add movie titles only overwrite them. Any help is very much appreciated.</p>