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@ -7,8 +7,8 @@ class BookManager:
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def __init__(self, data_file='books.json'):
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"""初始化图书管理器，加载已有图书数据"""
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self.data_file = data_file
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self.books = self._load_books()
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#self.data_file = data_file
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#self.books = self._load_books()
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def _load_books(self):
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"""从文件加载图书数据"""
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