用数据分析python写一个图书管理系统

好的，以下是一个简单的图书管理系统的示例代码：

import pandas as pd

class Book:
    def __init__(self, title, author, genre, year):
        self.title = title
        self.author = author
        self.genre = genre
        self.year = year
    
    def __repr__(self):
        return f"{self.title} by {self.author}"
    
class Library:
    def __init__(self):
        self.books = pd.DataFrame(columns=["Title", "Author", "Genre", "Year"])
    
    def add_book(self, book):
        self.books = self.books.append({
            "Title": book.title,
            "Author": book.author,
            "Genre": book.genre,
            "Year": book.year
        }, ignore_index=True)
    
    def remove_book(self, title):
        self.books = self.books[self.books.Title != title]
    
    def search(self, title=None, author=None, genre=None, year=None):
        results = self.books
        if title:
            results = results[results.Title == title]
        if author:
            results = results[results.Author == author]
        if genre:
            results = results[results.Genre == genre]
        if year:
            results = results[results.Year == year]
        return results
    
    def display_books(self):
        print(self.books)

此处使用pandas库创建一个DataFrame来存储图书信息，每本图书使用Book类来表示。Library类包括添加、删除、搜索和显示图书的方法。

我们现在可以创建一个Library对象并添加一些书籍：

library = Library()

book1 = Book("The Great Gatsby", "F. Scott Fitzgerald", "Fiction", 1925)
book2 = Book("To Kill a Mockingbird", "Harper Lee", "Fiction", 1960)
book3 = Book("Pride and Prejudice", "Jane Austen", "Romance", 1813)

library.add_book(book1)
library.add_book(book2)
library.add_book(book3)

library.display_books()

输出结果应为：

                Title                 Author     Genre  Year
0    The Great Gatsby   F. Scott Fitzgerald   Fiction  1925
1  To Kill a Mockingbird           Harper Lee   Fiction  1960
2   Pride and Prejudice           Jane Austen   Romance  1813

我们可以使用search方法来查找书籍：

results = library.search(title="The Great Gatsby", author="F. Scott Fitzgerald")
print(results)

输出结果应为：

              Title                Author    Genre  Year
0  The Great Gatsby  F. Scott Fitzgerald  Fiction  1925

最后，我们可以使用remove_book方法删除一本书：

library.remove_book("To Kill a Mockingbird")
library.display_books()

输出结果应为：

               Title                Author    Genre  Year
0   The Great Gatsby  F. Scott Fitzgerald  Fiction  1925
2  Pride and Prejudice           Jane Austen  Romance  1813

这是一个简单的图书管理系统，你可以根据自己的需求进行修改和扩展。