1. Ch 5, problem 21

2. Below are two different ways of implementing the function find_all_caps that
takes a filename as a parameter and returns a list consisting of all of the words
in the file that are all capitalized.

In general, Option 2 is considered a better option.  Why? (Hint: think about reusability).

Option 1:
def find_all_caps(filename):
	file = open(filename, "r")

	all_caps = []

	for line in file:
		line = line.strip()

		if line == line.upper():
			all_caps.append(line)

	return all_caps

Option 2:
def read_words(filename):
	file = open(filename, "r")

	words = []

	for line in file:
		word.append(line.strip())
	
	return words

def find_all_caps(filename):
	words = read_words(filename)

	all_caps = []

	for word in words:
		if word == word.upper():
			all_caps.append(word)
	
	return all_caps