# '#' is the comment character in Python.

# Everything from # to end of line is ignored by Python interpreter

# Create a list by enclosing elements in []

boys = ['Stan', 'Kyle', 'Cartman', 'Kenny']

print("After boys = ['Stan', 'Kyle', 'Cartman', 'Kenny']")

# Notice we have to convert the list to a string before concatenating

# with a string, otherwise we'd get a type error

print('boys == ' + str(boys))

# Can also create a list with list() constructor function

girls = list('Bebe', 'Wendy')

print("After girls = list('Bebe', 'Wendy')")

print("girls == " + str(girls))

# Access list elements by list position

print('boys[0] == ' + boys[0]) # prints Stan

# Notice that we have to put butters in a list.

# If we tried boys + 'Butters' we'd get a type error for trying to

# add a list to a string

boys + ['Butters']

print() # Blank like to make output more readable

print("After boys + ['Butters']")

print('boys == ' + str(boys))

# 'Butters' isn't in boys. What happened?

# The + operator creates a new list, which we have to assign to a variable

more_boys = boys + ['Butters']

print()

print("After more_boys = boys + ['Butters']")

print('more_boys == ' + str(more_boys))

# If we want to add to the original list, we can assign to interpreter

boys = boys + ['Butters']

print()

print("After boys = boys + ['Butters']")

print('boys == ' + str(boys))

# Note that we can combine + and = with a shortcut assignment:

boys += ['Tweak']

print()

print("After boys += ['Tweak']")

print('boys == ' + str(boys))