你可以用python+tkinter写一个图书借阅管理系统吗

当然可以，Python 是一门功能强大的编程语言，也有许多图形界面库可以用来编写应用程序，其中 Tkinter 是 Python 自带的 GUI 库，非常容易上手。下面是一个简单的图书借阅管理系统的例子，仅供参考：

from tkinter import *
import sqlite3

# 创建数据库连接
conn = sqlite3.connect('library.db')
c = conn.cursor()

# 创建图书表
c.execute('''CREATE TABLE IF NOT EXISTS books
            (id INTEGER PRIMARY KEY,
             title TEXT,
             author TEXT,
             year INTEGER,
             status TEXT)''')

# 创建借阅表
c.execute('''CREATE TABLE IF NOT EXISTS loans
            (id INTEGER PRIMARY KEY,
             book_id INTEGER,
             borrower TEXT,
             borrow_date TEXT,
             return_date TEXT)''')

# 初始化窗口
root = Tk()
root.title("图书借阅管理系统")
root.geometry("500x400")

# 标签
title_label = Label(root, text="图书借阅管理系统", font=("Arial", 20))
title_label.pack(pady=10)

# 输入框和标签
title_var = StringVar()
title_label = Label(root, text="书名：")
title_label.pack(pady=5)
title_entry = Entry(root, textvariable=title_var)
title_entry.pack()

author_var = StringVar()
author_label = Label(root, text="作者：")
author_label.pack(pady=5)
author_entry = Entry(root, textvariable=author_var)
author_entry.pack()

year_var = IntVar()
year_label = Label(root, text="年份：")
year_label.pack(pady=5)
year_entry = Entry(root, textvariable=year_var)
year_entry.pack()

# 添加图书按钮
def add_book():
    title = title_var.get()
    author = author_var.get()
    year = year_var.get()
    status = "在库"
    c.execute("INSERT INTO books (title, author, year, status) VALUES (?, ?, ?, ?)",
              (title, author, year, status))
    conn.commit()
    message_label.config(text="添加图书成功")

add_button = Button(root, text="添加图书", command=add_book)
add_button.pack(pady=10)

# 消息标签
message_label = Label(root, text="")
message_label.pack(pady=5)

# 查询图书按钮
def search_books():
    title = title_var.get()
    author = author_var.get()
    year = year_var.get()
    where_clause = []
    if title:
        where_clause.append("title LIKE '%{}%'".format(title))
    if author:
        where_clause.append("author LIKE '%{}%'".format(author))
    if year:
        where_clause.append("year = {}".format(year))
    if where_clause:
        where_clause_str = "WHERE " + " AND ".join(where_clause)
    else:
        where_clause_str = ""
    c.execute("SELECT * FROM books {}".format(where_clause_str))
    books = c.fetchall()
    message = ""
    if books:
        for book in books:
            message += "书名：{}\n作者：{}\n年份：{}\n状态：{}\n\n".format(book[1], book[2], book[3], book[4])
    else:
        message = "未找到符合条件的图书"
    message_label.config(text=message)

search_button = Button(root, text="查询图书", command=search_books)
search_button.pack(pady=10)

# 借阅图书按钮
def borrow_book():
    book_id = int(book_id_var.get())
    borrower = borrower_var.get()
    borrow_date = borrow_date_var.get()
    return_date = return_date_var.get()
    c.execute("SELECT status FROM books WHERE id = {}".format(book_id))
    status = c.fetchone()[0]
    if status == "在库":
        c.execute("UPDATE books SET status = '借出' WHERE id = {}".format(book_id))
        c.execute("INSERT INTO loans (book_id, borrower, borrow_date, return_date) VALUES (?, ?, ?, ?)",
                  (book_id, borrower, borrow_date, return_date))
        conn.commit()
        message_label.config(text="借阅成功")
    else:
        message_label.config(text="该图书已被借阅")

book_id_var = StringVar()
book_id_label = Label(root, text="图书编号：")
book_id_label.pack(pady=5)
book_id_entry = Entry(root, textvariable=book_id_var)
book_id_entry.pack()

borrower_var = StringVar()
borrower_label = Label(root, text="借阅人：")
borrower_label.pack(pady=5)
borrower_entry = Entry(root, textvariable=borrower_var)
borrower_entry.pack()

borrow_date_var = StringVar()
borrow_date_label = Label(root, text="借阅日期：")
borrow_date_label.pack(pady=5)
borrow_date_entry = Entry(root, textvariable=borrow_date_var)
borrow_date_entry.pack()

return_date_var = StringVar()
return_date_label = Label(root, text="归还日期：")
return_date_label.pack(pady=5)
return_date_entry = Entry(root, textvariable=return_date_var)
return_date_entry.pack()

borrow_button = Button(root, text="借阅图书", command=borrow_book)
borrow_button.pack(pady=10)

# 归还图书按钮
def return_book():
    book_id = int(book_id_var.get())
    c.execute("SELECT status FROM books WHERE id = {}".format(book_id))
    status = c.fetchone()[0]
    if status == "借出":
        c.execute("UPDATE books SET status = '在库' WHERE id = {}".format(book_id))
        c.execute("DELETE FROM loans WHERE book_id = {}".format(book_id))
        conn.commit()
        message_label.config(text="归还成功")
    else:
        message_label.config(text="该图书未被借阅")

return_button = Button(root, text="归还图书", command=return_book)
return_button.pack(pady=10)

# 关闭数据库连接
def close_db():
    conn.close()
    root.destroy()

root.protocol("WM_DELETE_WINDOW", close_db)
root.mainloop()

这个例子使用了 SQLite 数据库来存储图书和借阅信息。你可以根据自己的需要修改代码。