# Uses a Counter to implement a word count,
# so that the user can see which words
# occur the most in the book Moby-Dick.

from collections import Counter

# minimum number of occurrences needed to be printed
OCCURRENCES = 2000

def intro():
    print("This program displays the most")
    print("frequently occurring words from")
    print("the book Moby Dick.")
    print()

# Displays all words in the dictionary that occur
# at least OCCURRENCES number of times.
def print_results(word_counts):
    for word, count in word_counts.items():
        if count > OCCURRENCES:
            print(word, "occurs", count, "times.")

def main():
    intro()
    with open("mobydick.txt") as file:
        words = file.read().lower().split()
        word_counts = Counter(words)
        print_results(word_counts)

main()