''' Purpose: examine a list of words
'''

# get text from user
reply = input( 'Enter text: ' )

print()

# split text into words - words is a list of things that include the words in the string reply where each word is separated by a space
words = reply.split()
 
# let's see what we got
print( 'Supplied text =', reply )
print( 'words =', words )

print()

# determine number of words - how many words are in the list words?

n = len( words )
# the len( x ) function can take in a string OR a LIST
#  x = string --> finds how many characters there are in x
#  x = list --> how many elements there are in the list x

# if we had used len( reply ), it would tell us how many characters are in reply, not how many words there are

# len() returns an int

# REVIEW THIS CONCEPT! THIS IS VERY IMPORTANT!!!!!!!

# determine total word length

sum_of_word_lengths = 0     # at the beginning, the accumulator starts at 0 for a summation problem because we haven't added anything yet
# this is an int
print( 'sum_of_word_lengths:', sum_of_word_lengths )

# for each word in our words list, let's figure out the length of the current word --> gives you an int
# then we update the accumulator by adding the length of the current word to the RUNNING total
# when the loop finishes, we have the final value of the sum
for w in words :
    # get current word's length
    # our current word is represented by the variable w
    # need an assignment statement so we can recall the value later
    current_length = len( w )   # len() returns an int

    # print( w, ':', current_length )    # use this line to check if you're on the right path

    # add length to the accummulation
    # we want the length of each word to be part of the total in sum_of_word_length
    # --> we update the accumulator, increase the sum by the current length
    sum_of_word_lengths = sum_of_word_lengths + current_length

    print( 'sum_of_word_lengths:', sum_of_word_lengths )    # prints the new value of the sum_of_word_length after we have updated it on line 52
    # if you print this value before line 52, it will give you the current version before you updated

# after the loop, we have found the sum of all the word lengths!
# determine average

average_word_length = sum_of_word_lengths / n    # we can take the final value of the sum of the word lengths and divide by the number of words (n) to get the average
# remember one / is decimal division, so we get decimal answer

print( 'Average word length:', average_word_length )