All right, it's time to wrap things up!

• List definitions require elements separated with commas inside square brackets:

  invited_guests = ['Mark', 'Hannah', 'Walter']

• List elements are accessed with square brackets. Indexing starts at 0.

  # first element
  invited_guests[0] 
  # first and second element
  invited_guests[0:2] 
  

• To add a new element:

  # way one
  invited_guests.append('New Guest')
  # way two
  invited_guests + ['New Guest']
  

• To delete an element from a list:

  # when you know the index
  del invited_guests[2]
  # when you know the value
  invited_guests.remove('Hannah')
  

• To iterate over a list:

  # when you don't need the index
  for guest in invited_guests:
    print(guest)
  # when you need the index
  for guest in range (0, len(invited_guests)):
  

• Lists can be used as function arguments. They can also be returned from functions.

Alright, it's time for a short quiz!