def print_file_stats(filename):
    file = open(filename, "r")
    
    longest = ""
    shortest = ""
    total_length = 0
    count = 0
    
    for word in file:
        word = word.strip()
        
        if len(word) > len(longest):
            longest = word
            
        if shortest == "" or len(word) < len(shortest):
            shortest = word
            
        total_length += len(word)
        count += 1
        
    file.close()
   
    print("Number of words: " + str(count))
    print("Longest word: " + longest)
    print("Shortest word: " + shortest)
    print("Avg. word length: " + str(float(total_length)/count))