main.py

def main():
  book_path = "books/frankenstein.txt"
  text = get_book_text(book_path)
  num_words = get_num_words(text)
  chars_dict = get_chars_dict(text)
  chars_sorted_list = chars_dict_to_sorted_list(chars_dict)

  print(f"--- Begin report of {book_path} ---")
  print(f"{num_words} words found in the document")
  print()

  for item in chars_sorted_list:
    if not item["char"].isalpha():
      continue
    print(f"The '{item['char']}' character was found {item['num']} times")

  print("--- End report ---")


def get_num_words(text):
  words = text.split()
  return len(words)


def sort_on(d):
  return d["num"]


def chars_dict_to_sorted_list(num_chars_dict):
  sorted_list = []
  for ch in num_chars_dict:
    sorted_list.append({"char": ch, "num": num_chars_dict[ch]})
  sorted_list.sort(reverse=True, key=sort_on)
  return sorted_list


def get_chars_dict(text):
  chars = {}
  for c in text:
    lowered = c.lower()
    if lowered in chars:
      chars[lowered] += 1
    else:
      chars[lowered] = 1
  return chars


def get_book_text(path):
  with open(path) as f:
    return f.read()

main()