Блог

У меня есть очень длинный словарь, подобный этому:

 book_dictionary = {'Fiction': [{'title': "Antiques Roadkill: A Trash 'n' Treasures Mystery", 'author': 'Barbara Allan', 'rating': '3.3', 'publisher': 'Kensington Publishing Corp.', 'page_count': '288', 'language': 'English'}, {'title': 'The Painted Man (The Demon Cycle, Book 1)', 'author': 'Peter V. Brett', 'rating': '4.5', 'publisher': 'HarperCollins UK', 'page_count': '544', 'language': 'English'}, {'title': 'Edgedancer: From the Stormlight Archive', 'author': 'Brandon Sanderson', 'rating': '4.8', 'publisher': 'Tor Books', 'page_count': '226', 'language': 'English'}, {'title': 'Sword of Destiny: Witcher 2: Tales of the Witcher', 'author': 'Andrzej Sapkowski', 'rating': '4.8', 'publisher': 'Hachette UK', 'page_count': '400', 'language': 'English'}, {'title': 'After Anna', 'author': 'Alex Lake', 'rating': '4.1', 'publisher': 'HarperCollins UK', 'page_count': '416', 'language': 'English'}, {'title': 'Little Girl Lost: A Lucy Black Thriller', 'author': 'Brian McGilloway', 'rating': '4', 'publisher': 'Harper Collins', 'page_count': '336', 'language': 'English'}, {'title': 'The Guardians: The explosive new thriller from international bestseller John Grisham', 'author': 'John Grisham', 'rating': '', 'publisher': 'Hachette UK', 'page_count': '384', 'language': 'English'}, {'title': 'Bring Me Back', 'author': 'B A Paris', 'rating': '3.8', 'publisher': 'HarperCollins UK', 'page_count': '368', 'language': 'English'}, {'title': "Final Option: 'The best one yet'", 'author': 'Clive Cussler', 'rating': '5', 'publisher': 'Penguin UK', 'page_count': '400', 'language': 'English'}, {'title': 'The Red Signal: An Agatha Christie Short Story', 'author': 'Agatha Christie', 'rating': '5', 'publisher': 'HarperCollins UK', 'page_count': '40', 'language': 'English'}, {'title': 'The Name of the Wind: The Kingkiller Chronicle:, Book 1', 'author': 'Patrick Rothfuss', 'rating': '4.3', 'publisher': 'Hachette UK', 'page_count': '672', 'language': 'English'}, {'title': 'Antiques Con', 'author': 'Barbara Allan', 'rating': '4.8', 'publisher': 'Kensington Books', 'page_count': '288', 'language': 'English'}, {'title': 'Antiques Chop', 'author': 'Barbara Allan', 'rating': '4.5', 'publisher': 'Kensington Books', 'page_count': '240', 'language': 'English'}, {'title': "Salem's Lot", 'author': 'Stephen King', 'rating': '4.4', 'publisher': 'Hachette UK', 'page_count': '300', 'language': 'English'}, {'title': 'Killer Blonde', 'author': 'Laura Levine', 'rating': '4', 'publisher': 'Kensington Books', 'page_count': '288', 'language': 'English'}, {'title': 'No Mercy: The brand new novel from the Queen of Crime', 'author': 'Martina Cole', 'rating': '', 'publisher': 'Hachette UK', 'page_count': '416', 'language': 'English'}, {'title': 'Antiques Knock-Off', 'author': 'Barbara Allan', 'rating': '4.3', 'publisher': 'Kensington Publishing Corp.', 'page_count': '240', 'language': 'English'}, {'title': 'A Trace of Vice (a Keri Locke Mystery--Book #3)', 'author': 'Blake Pierce', 'rating': '4.8', 'publisher': 'Blake Pierce', 'page_count': '250', 'language': 'English'}, {'title': 'Total Control', 'author': 'David Baldacci', 'rating': '4', 'publisher': 'Pan Macmillan', 'page_count': '624', 'language': 'English'}, {'title': 'Mrs. Pollifax Unveiled', 'author': 'Dorothy Gilman', 'rating': '3.9', 'publisher': 'Ballantine Books', 'page_count': '208', 'language': 'English'}, {'title': 'And Then There Were None', 'author': 'Agatha Christie', 'rating': '4.6', 'publisher': 'HarperCollins UK', 'page_count': '224', 'language': 'English'}, {'title': 'The Lord of the Rings: The Fellowship of the Ring, The Two Towers, The Return of the King', 'author': 'J. R. R. Tolkien', 'rating': '4.6', 'publisher': 'HarperCollins UK', 'page_count': '1216', 'language': 'English'}, {'title': 'A Feast for Crows (A Song of Ice and Fire, Book 4)', 'author': 'George R.R. Martin', 'rating': '4.5', 'publisher': 'HarperCollins UK', 'page_count': '864', 'language': 'English'}, {'title': 'A Game of Thrones: The Story Continues Books 1-5: A Game of Thrones, A Clash of Kings, A Storm of Swords, A Feast for Crows, A Dance with Dragons (A Song of Ice and Fire)', 'author': 'George R.R. Martin', 'rating': '4.5', 'publisher': 'HarperCollins UK', 'page_count': '4544', 'language': 'English'}, {'title': 'The Mysterious Affair at Styles', 'author': 'Agatha Christie', 'rating': '4.4', 'publisher': 'HarperCollins UK', 'page_count': '208', 'language': 'English'}, {'title': "The Girl in the Spider's Web: A Lisbeth Salander novel, continuing Stieg Larsson's Millennium Series", 'author': 'David Lagercrantz', 'rating': '4.1', 'publisher': 'Vintage Crime/Black Lizard', 'page_count': '416', 'language': 'English'}, {'title': 'Night of the Bold (Kings and Sorcerers--Book 6)', 'author': 'Morgan Rice', 'rating': '4.3', 'publisher': 'Morgan Rice', 'page_count': '250', 'language': 'English'}, {'title': 'A Trace of Crime (a Keri Locke Mystery--Book #4)', 'author': 'Blake Pierce', 'rating': '4.7', 'publisher': 'Blake Pierce', 'page_count': '250', 'language': 'English'}, {'title': 'Shantaram', 'author': 'Gregory David Roberts', 'rating': '4.5', 'publisher': 'Hachette UK', 'page_count': '944', 'language': 'English'}, {'title': 'The Black Box', 'author': 'Michael Connelly', 'rating': '4', 'publisher': 'Hachette UK', 'page_count': '448', 'language': 'English'}, {'title': 'The Tower of the Swallow: Witcher 6', 'author': 'Andrzej Sapkowski', 'rating': '4.6', 'publisher': 'Hachette UK', 'page_count': '400', 'language': 'English'}, {'title': 'Prince of Thorns (The Broken Empire, Book 1)', 'author': 'Mark Lawrence', 'rating': '4.2', 'publisher': 'HarperCollins UK', 'page_count': '416', 'language': 'English'}, {'title': 'The Vagrant (The Vagrant Trilogy)', 'author': 'Peter Newman', 'rating': '4.2', 'publisher': 'HarperCollins UK', 'page_count': '416', 'language': 'English'}, {'title': 'The Weight of Honor (Kings and Sorcerers--Book 3)', 'author': 'Morgan Rice', 'rating': '4.4', 'publisher': 'Morgan Rice', 'page_count': '250', 'language': 'English'}, {'title': 'The Memoirs of Sherlock Holmes', 'author': 'Arthur Conan Doyle', 'rating': '4.2', 'publisher': 'Simon and Schuster', 'page_count': '320', 'language': 'English'}, {'title': 'We', 'author': 'Yevgeny Zamyatin', 'rating': '4.3', 'publisher': 'Pan', 'page_count': '226', 'language': 'English'}, {'title': 'In Dark Company: A Kate Burkholder Short Story', 'author': 'Linda Castillo', 'rating': '4.3', 'publisher': 'Minotaur Books', 'page_count': '60', 'language': 'English'}, {'title': "Chronicle of the Unhewn Throne: (The Emperor's Blades, The Providence of Fire, The Last Mortal Bond)", 'author': 'Brian Staveley', 'rating': '4.3', 'publisher': 'Macmillan', 'page_count': '1728', 'language': 'English'}, {'title': 'The Malady and Other Stories: An Andrzej Sapkowski Sampler', 'author': 'Andrzej Sapkowski', 'rating': '4.8', 'publisher': 'Hachette UK', 'page_count': '96', 'language': 'English'}], 'Comics': [{'title': 'Deadpool Kills the Marvel Universe', 'author': 'Cullen Bunn', 'rating': '4.2', 'publisher': 'Marvel Entertainment', 'page_count': '96', 'language': 'English'}, {'title': 'Young Justice Vol. 1', 'author': 'Art Baltazar', 'rating': '4.1', 'publisher': 'DC', 'page_count': '164', 'language': 'English'}, {'title': 'Ultimate Spider-Man Vol. 11: Carnage', 'author': 'Brian Michael Bendis', 'rating': '4.1', 'publisher': 'Marvel Entertainment', 'page_count': '144', 'language': 'English'}, {'title': 'Immortal Hulk Vol. 1: Or Is He Both?', 'author': 'Al Ewing', 'rating': '4.4', 'publisher': 'Marvel Entertainment', 'page_count': '128', 'language': 'English'}, {'title': 'Watchmen (2019 Edition)', 'author': 'Alan Moore', 'rating': '4.2', 'publisher': 'DC Comics', 'page_count': '448', 'language': 'English'}, {'title': 'The Joker', 'author': 'Brian Azzarello', 'rating': '4.4', 'publisher': 'DC', 'page_count': '130', 'language': 'English'}, {'title': 'Venomized', 'author': 'Cullen Bunn', 'rating': '4.5', 'publisher': 'Marvel Entertainment', 'page_count': '136', 'language': 'English'}], {'Economics':[...]}}   

ПРИМЕЧАНИЕ: Есть пустые оценки. То, что я пытаюсь сделать, — это написать функцию, которая принимает целочисленный аргумент, рейтинг и сам словарь. Функция возвращает список с книгой для данного рейтинга.

Например, если входной параметр функции равен 3, функция вернет книгу, скорость которой больше или равна 3 и меньше 4. Затем он напечатает его следующим образом:

 Title: "Antiques Roadkill: A Trash 'n' Treasures Mystery" Authors: " Barbara Allan” Language: "English" Rating: 3.3 Publisher: "Kensington Publishing Corp." Category: "Fiction” Page Count: 288  

То, что у меня сейчас есть, — это:

 def get_books_by_rate(rate: int, book_dictionary) -gt; list:  ratings = []    for category in book_dictionary.keys():   books = book_dictionary[category]  for book in books:  x = book['rating']  if (x gt;= rate) and (x lt; rate   1):   title = book('title')  author = book('author')  language = book('language')  rating = book('rating')  publisher = book('publisher')  cat = books  page_count = book('page_count')     result = {'Title': title,  'Authors': author,  'Language': language,  'Rating': rating,  'Publisher': publisher,  'Category': cat,  'Page Count': page_count}  ratings.append(result)  return ratings  get_books_by_rate_print = get_books_by_rate(3, book_dictionary) print(get_books_by_rate_print)  

Я пытаюсь заставить функцию правильно печатать, прежде чем пытаться ее отформатировать. Однако я застрял:

 Traceback (most recent call last):  File "C:/Users/aL/Downloads/Python/rate_func.py", line 50, in lt;modulegt;  get_books_by_rate_print = get_books_by_rate(3, book_dictionary)  File "C:/Users/aL/Downloads/Python/rate_func.py", line 31, in lt;modulegt;  if (x gt;= rate) and (x lt; rate   1): builtins.TypeError: 'gt;=' not supported between instances of 'str' and 'int'  

Я не уверен, как преобразовать x в значение с плавающей точкой/int для сравнения двух переменных.

Попробуйте это:

 def get_books_by_rate(rate: int, book_dictionary) -gt; list:  ratings = []    for category in book_dictionary.keys():   books = book_dictionary[category]  for book in books:  x = 0   rating_valid = True   try:  x = float(book['rating'])  except:  rating_valid = False   if rating_valid and (x gt;= rate) and (x lt; rate   1):   result = {}  result.update({'Title': book['title']})  result.update({'Authors': book['author']})  result.update({'Language': book['language']})  result.update({'Rating': book['rating']})  result.update({'Publisher': book['publisher']})  result.update({'Category': category})  result.update({'Page Count': book['page_count']})   ratings.append(result)   return ratings  book_dictionary = *PUT YOUR DICTIONARY HERE*  get_books_by_rate_print = get_books_by_rate(3, book_dictionary)  for item in get_books_by_rate_print:  print(item)  

Этот подход также должен работать:

 my_dict = {'Fiction': [{'title': "Antiques Roadkill: A Trash 'n' Treasures Mystery", 'author': 'Barbara Allan', 'rating': '3.3', 'publisher': 'Kensington Publishing Corp.', 'page_count': '288', 'language': 'English'}],  'Economics': [{'title': 'How To Win Friends and Influence People', 'author': 'Dale Carnegie', 'rating': '4.3', 'publisher': 'Simon and Schuster', 'page_count': '320', 'language': 'English'}]}  def get_books_by_rate(rate: int, book_dictionary = my_dict) -gt; list:  res = []  vote = int(rate)  for k, l in book_dictionary.items():  for book in l:  if vote == int(float(book["rating"])):  book["category"] = k  res.append(book)  return res  def print_book(book):  print(f'Title: {book["title"]}')  print(f'Authors: {book["author"]}')  print(f'Language: {book["language"]}')  print(f'Rating: {book["rating"]}')  print(f'Publisher: {book["publisher"]}')  print(f'Category: {book["category"]}')  print(f'Page Count: {book["page_count"]}')   for book in get_books_by_rate(3):  print_book(book)  print(30 * "-")  

Я думаю , что усечение рейтинга с плавающей точкой до ее целочисленной части с помощью int(float(book["rating"])) более компактного, чем что-то подобное min lt;= rating lt; max , но, возможно, это просто вопрос вкуса.

Возможно, это поможет:

 book_dictionary = {'Fiction': [{'title': "Antiques Roadkill: A Trash 'n' Treasures Mystery", 'author': 'Barbara Allan', 'rating': '3.3', 'publisher': 'Kensington Publishing Corp.', 'page_count': '288', 'language': 'English'}],  'Economics': [{'title': 'How To Win Friends and Influence People', 'author': 'Dale Carnegie', 'rating': '4.3', 'publisher': 'Simon and Schuster', 'page_count': '320', 'language': 'English'}]}  def get_books_by_rate(rate, books):  ratings = []  for v in books.values():  for lb in v:  rating = float(lb['rating'])  if rating gt;= rate and rating lt; rate   1:  ratings.append(lb)  return ratings  print(get_books_by_rate(3, book_dictionary))  

Используется .strip() для удаления пробела и float() преобразования типа в плавающий.

Чтобы установить пустой рейтинг как 0 :

 rating = book['rating'].strip() x = float(rating) if rating != '' else 0  

или игнорировать пустые оценки:

 rating = book['rating'].strip() if rating == '':  continue