''' Purpose: expand input processing capabilities by splitting
         an input string into its component words
'''

# get input
reply = input( 'What are your three favorite words: ' )

print()

# We are now introducting the .split() function.
# We call .split() on a string like this:
    # If s is a string, you call s.split() to break s into a list
    # of smaller strings by breaking up the larger string
    # at its spaces/whitespace by default!
    # !!!!!! If s is "I love ice cream"
        # s.split() gives you ['i','love','ice','cream']

# determine individual words w1, w2, and w3
# If we type in three words, we can split it up into three words
# and assign each word to three variables.

w1, w2, w3 = reply.split() # reply stores the string we want to split!
# () are for functions! If you don't use the (), it won't perform the function.
# You all will eventually write your own functions that will need the () to work

# display results

# prints each word on a separate line

# It's just printing the variable values!
print(  w1 )
print( w2 )
print( w3 )

# Why wouldn't just typing 'abc' work? Because Python splits at whitespace.
# You need to put spaces so that it can separate at whitespace.
# So if I put '                 a b          c '
# I would stil get a list of ['a','b','c'] BECAUSE IT SPLITS IT AT WHITESPACE

# If we ran 'a b c d' then it blows up because we're trying to assign
# a list with ['a','b','c','d'] to three variables. Where does the last one go?
# It won't. This code blows up. We will know how to fix this in later examples..

# More on lists later!
# .split() will split on whitespace by default but you can
# give it an argument and split it at a particular character or sequence.