我想從 books_library 中洗掉的書的示例（取決于書名（輸入））：
{'Books': [{"Book's ID": {'001'}, "Book's Name": {'Avengers'}, "Book's Authors": {'Stan Lee'}, "Book's Published year": {'1938 '}, "Book's Type": {'1'}, "Book's Copies": {'10'}}, {"Book's ID": {'002'}, "Book's Name": {'Spider Man'}, “書籍作者”：{'Stan Lee'}，“書籍出版年份”：{'1948'}，“書籍型別”：{'2'}，“書籍副本”：{'15'}}]}
我正在使用的功能：
def delete_book(book_name, books_library):
"""
A function that update the collection of books that in the library, without deleting one.
:param book_name: The name of the book to delete.
:param books_library: A collection of all the books in library
"""
for book in range(len(books_library["Books"])):
if book_name in books_library["Books"][book]["Book's Name"]:
print("Are you sure you want delete this book?: ")
identifier = input()
identifiers = ['y','n']
while identifier not in identifiers:
print("Please answer with y or n")
print("Are you sure you want to delete this book?: ")
identifier = input()
if identifier == 'y':
books_library["Books"][book].pop(book)
return f"{book_name} is deleted from books library"
## Todo : Find a way to delete book by his name (should delete all books details)
else:
print(f"The book {book_name} does not exist!")
if identifier == 'n':
print("Canceling...")
break
我在 Main.py 中使用的代碼：
if identifier == '4': # choosing to Remove a book
print("Which book would you like to remove?: \n")
book_name = input()
delete_book(book_name, books_library)
print("The Book has deleted from library.")
我每次得到的錯誤：
Traceback (most recent call last):
File "d:\John bryce - python\FirstProject-managing book library\main.py", line 83, in
<module>
delete_book(book_name, books_library)
File "d:\John bryce - python\FirstProject-managing book library\LibraryBooks.py",
line 91, in delete_book
books_library["Books"][book].pop(book)
KeyError: 0
uj5u.com熱心網友回復：
嘗試替換：
books_library["Books"][book].pop(book)
經過：
books_library["Books"].pop(book)
uj5u.com熱心網友回復：
基于此：
{'Books': [{"Book's ID": {'001'}, "Book's Name": {'Avengers'}, "Book's Authors": {'Stan Lee'}, "Book's Published year": {'1938'}, "Book's Type": {'1'}, "Book's Copies": {'10'}}, {"Book's ID": {'002'}, "Book's Name": {'Spider Man'}, "Book's Authors": {'Stan Lee'}, "Book's Published year": {'1948'}, "Book's Type": {'2'}, "Book's Copies": {'15'}}]}
您正在從“books_library”字典中選擇“Books”。
book_library => 字典
book_library['Books'] => 串列
book_library["Books"][book] => dict
記住第一行
for book in range(len(books_library["Books"]))
'book' 是一個整數，它不作為一個鍵出現在 book_library["Books"][book] 下的字典中。
我認為這應該說
books_library['Books'].pop(book)
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