9.23每日总结

Python题目：学生信息管理系统-高级版（图形界面+MySQL数据库）
使用图形界面显示，选用list、tuple、dictionary或map等数据结构，操作数据库存储X个学生的三门课的成绩（机器学习、Python程序设计、研究生英语），并实现以下功能：

1.添加学生信息
2.修改学生信息
3.删除学生
4.添加学生的成绩
5.修改学生成绩
6.按姓名或者学号查找学生，显示学生信息及三门课的成绩，以及排名
7.学生成绩统计（每门课的平均分、最高分、最低分）

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#!/usr/bin/python3    import pymysql from tkinter import ttk import tkinter as tk import tkinter.font as tkFont from tkinter import * # 图形界面库 import tkinter.messagebox as messagebox # 弹窗       class StartPage:     def __init__(self, parent_window):         parent_window.destroy() # 销毁子界面            self.window = tk.Tk()  # 初始框的声明         self.window.title('学生信息管理系统')         self.window.geometry('300x470') # 这里的乘是小x            label = Label(self.window, text="学生信息管理系统", font=("Verdana", 20))         label.pack(pady=100)  # pady=100 界面的长度            Button(self.window, text="管理员登陆", font=tkFont.Font(size=16), command=lambda: AdminPage(self.window), width=30, height=2,                fg='white', bg='gray', activebackground='black', activeforeground='white').pack()         Button(self.window, text="学生登陆", font=tkFont.Font(size=16), command=lambda: StudentPage(self.window), width=30,                height=2,fg='white', bg='gray', activebackground='black', activeforeground='white').pack()         Button(self.window, text="关于", font=tkFont.Font(size=16), command=lambda: AboutPage(self.window), width=30, height=2,                fg='white', bg='gray', activebackground='black', activeforeground='white').pack()         Button(self.window, text='退出系统', height=2, font=tkFont.Font(size=16), width=30, command=self.window.destroy,                fg='white', bg='gray', activebackground='black', activeforeground='white').pack()            self.window.mainloop() # 主消息循环       #管理员登陆页面 class AdminPage:     def __init__(self, parent_window):         parent_window.destroy() # 销毁主界面            self.window = tk.Tk()  # 初始框的声明         self.window.title('管理员登陆页面')         self.window.geometry('300x450')  # 这里的乘是小x            label = tk.Label(self.window, text='管理员登陆', bg='green', font=('Verdana', 20), width=30, height=2)         label.pack()            Label(self.window, text='管理员账号：', font=tkFont.Font(size=14)).pack(pady=25)         self.admin_username = tk.Entry(self.window, width=30, font=tkFont.Font(size=14), bg='Ivory')         self.admin_username.pack()            Label(self.window, text='管理员密码：', font=tkFont.Font(size=14)).pack(pady=25)         self.admin_pass = tk.Entry(self.window, width=30, font=tkFont.Font(size=14), bg='Ivory', show='*')         self.admin_pass.pack()            Button(self.window, text="登陆", width=8, font=tkFont.Font(size=12), command=self.login).pack(pady=40)         Button(self.window, text="返回首页", width=8, font=tkFont.Font(size=12), command=self.back).pack()            self.window.protocol("WM_DELETE_WINDOW", self.back)  # 捕捉右上角关闭点击         self.window.mainloop()  # 进入消息循环        def login(self):         print(str(self.admin_username.get()))         print(str(self.admin_pass.get()))         admin_pass = None            # 数据库操作 查询管理员表         db = pymysql.connect("localhost", "root", "root", "student")  # 打开数据库连接         cursor = db.cursor()  # 使用cursor()方法获取操作游标         sql = "SELECT * FROM admin_login_k WHERE admin_id = '%s'" % (self.admin_username.get())  # SQL 查询语句         try:         # 执行SQL语句             cursor.execute(sql)             # 获取所有记录列表             results = cursor.fetchall()             for row in results:                 admin_id = row[0]                 admin_pass = row[1]                 # 打印结果                 print("admin_id=%s,admin_pass=%s" % (admin_id, admin_pass))         except:             print("Error: unable to fecth data")             messagebox.showinfo('警告！', '用户名或密码不正确！')         db.close()  # 关闭数据库连接            print("正在登陆管理员管理界面")         print("self",self.admin_pass)         print("local",admin_pass)            if self.admin_pass.get() == admin_pass:             AdminManage(self.window)  # 进入管理员操作界面         else:             messagebox.showinfo('警告！', '用户名或密码不正确！')        def back(self):         StartPage(self.window) # 显示主窗口 销毁本窗口       #学生登陆页面 class StudentPage:     def __init__(self, parent_window):         parent_window.destroy() # 销毁主界面            self.window = tk.Tk()  # 初始框的声明         self.window.title('学生登陆')         self.window.geometry('300x450')  # 这里的乘是小x            label = tk.Label(self.window, text='学生登陆', bg='green', font=('Verdana', 20), width=30, height=2)         label.pack()            Label(self.window, text='学生账号：', font=tkFont.Font(size=14)).pack(pady=25)         self.student_id = tk.Entry(self.window, width=30, font=tkFont.Font(size=14), bg='Ivory')         self.student_id.pack()            Label(self.window, text='学生密码：', font=tkFont.Font(size=14)).pack(pady=25)         self.student_pass = tk.Entry(self.window, width=30, font=tkFont.Font(size=14), bg='Ivory', show='*')         self.student_pass.pack()            Button(self.window, text="登陆", width=8, font=tkFont.Font(size=12), command=self.login).pack(pady=40)         Button(self.window, text="返回首页", width=8, font=tkFont.Font(size=12), command=self.back).pack()            self.window.protocol("WM_DELETE_WINDOW", self.back)  # 捕捉右上角关闭点击         self.window.mainloop()  # 进入消息循环        def login(self):         print(str(self.student_id.get()))         print(str(self.student_pass.get()))         stu_pass = None            # 数据库操作 查询管理员表         db = pymysql.connect("localhost", "root", "root", "student")  # 打开数据库连接         cursor = db.cursor()  # 使用cursor()方法获取操作游标         sql = "SELECT * FROM stu_login_k WHERE stu_id = '%s'" % (self.student_id.get())  # SQL 查询语句         try:             # 执行SQL语句             cursor.execute(sql)             # 获取所有记录列表             results = cursor.fetchall()             for row in results:                 stu_id = row[0]                 stu_pass = row[1]                 # 打印结果                 print("stu_id=%s,stu_pass=%s" % (stu_id, stu_pass))         except:             print("Error: unable to fecth data")             messagebox.showinfo('警告！', '用户名或密码不正确！')         db.close()  # 关闭数据库连接            print("正在登陆学生信息查看界面")         print("self", self.student_pass.get())         print("local", stu_pass)            if self.student_pass.get() == stu_pass:             StudentView(self.window, self.student_id.get()) # 进入学生信息查看界面         else:             messagebox.showinfo('警告！', '用户名或密码不正确！')        def back(self):         StartPage(self.window)  # 显示主窗口 销毁本窗口          # 管理员操作界面 class AdminManage:     def __init__(self, parent_window):         parent_window.destroy() # 销毁主界面            self.window = Tk()  # 初始框的声明         self.window.title('管理员操作界面')            self.frame_left_top = tk.Frame(width=300, height=200)         self.frame_right_top = tk.Frame(width=200, height=200)         self.frame_center = tk.Frame(width=500, height=400)         self.frame_bottom = tk.Frame(width=650, height=50)            # 定义下方中心列表区域         self.columns = ("学号", "姓名", "性别", "年龄")         self.tree = ttk.Treeview(self.frame_center, show="headings", height=18, columns=self.columns)         self.vbar = ttk.Scrollbar(self.frame_center, orient=VERTICAL, command=self.tree.yview)         # 定义树形结构与滚动条         self.tree.configure(yscrollcommand=self.vbar.set)            # 表格的标题         self.tree.column("学号", width=150, anchor='center')  # 表示列,不显示         self.tree.column("姓名", width=150, anchor='center')         self.tree.column("性别", width=100, anchor='center')         self.tree.column("年龄", width=100, anchor='center')            # 调用方法获取表格内容插入         self.tree.grid(row=0, column=0, sticky=NSEW)         self.vbar.grid(row=0, column=1, sticky=NS)            self.id = []         self.name = []         self.gender = []         self.age = []         # 打开数据库连接         db = pymysql.connect("localhost", "root", "root", "student")         cursor = db.cursor()  # 使用cursor()方法获取操作游标         sql = "SELECT * FROM student_k"  # SQL 查询语句         try:             # 执行SQL语句             cursor.execute(sql)             # 获取所有记录列表             results = cursor.fetchall()             for row in results:                 self.id.append(row[0])                 self.name.append(row[1])                 self.gender.append(row[2])                 self.age.append(row[3])                 # print(self.id)                 # print(self.name)                 # print(self.gender)                 # print(self.age)         except:             print("Error: unable to fetch data")             messagebox.showinfo('警告！', '数据库连接失败！')         db.close()# 关闭数据库连接               print("test***********************")         for i in range(min(len(self.id), len(self.name), len(self.gender), len(self.age))):  # 写入数据             self.tree.insert('', i, values=(self.id[i], self.name[i], self.gender[i], self.age[i]))            for col in self.columns:  # 绑定函数，使表头可排序             self.tree.heading(col, text=col,                               command=lambda _col=col: self.tree_sort_column(self.tree, _col, False))            # 定义顶部区域         # 定义左上方区域         self.top_title = Label(self.frame_left_top, text="学生信息:", font=('Verdana', 20))         self.top_title.grid(row=0, column=0, columnspan=2, sticky=NSEW, padx=50, pady=10)            self.left_top_frame = tk.Frame(self.frame_left_top)         self.var_id = StringVar()  # 声明学号         self.var_name = StringVar()  # 声明姓名         self.var_gender = StringVar()  # 声明性别         self.var_age = StringVar()  # 声明年龄         # 学号         self.right_top_id_label = Label(self.frame_left_top, text="学号：", font=('Verdana', 15))         self.right_top_id_entry = Entry(self.frame_left_top, textvariable=self.var_id, font=('Verdana', 15))         self.right_top_id_label.grid(row=1, column=0)  # 位置设置         self.right_top_id_entry.grid(row=1, column=1)         # 姓名         self.right_top_name_label = Label(self.frame_left_top, text="姓名：", font=('Verdana', 15))         self.right_top_name_entry = Entry(self.frame_left_top, textvariable=self.var_name, font=('Verdana', 15))         self.right_top_name_label.grid(row=2, column=0)  # 位置设置         self.right_top_name_entry.grid(row=2, column=1)         # 性别         self.right_top_gender_label = Label(self.frame_left_top, text="性别：", font=('Verdana', 15))         self.right_top_gender_entry = Entry(self.frame_left_top, textvariable=self.var_gender,                                             font=('Verdana', 15))         self.right_top_gender_label.grid(row=3, column=0)  # 位置设置         self.right_top_gender_entry.grid(row=3, column=1)         # 年龄         self.right_top_gender_label = Label(self.frame_left_top, text="年龄：", font=('Verdana', 15))         self.right_top_gender_entry = Entry(self.frame_left_top, textvariable=self.var_age,                                             font=('Verdana', 15))         self.right_top_gender_label.grid(row=4, column=0)  # 位置设置         self.right_top_gender_entry.grid(row=4, column=1)            # 定义右上方区域         self.right_top_title = Label(self.frame_right_top, text="操作：", font=('Verdana', 20))            self.tree.bind('<Button-1>', self.click)  # 左键获取位置         self.right_top_button1 = ttk.Button(self.frame_right_top, text='新建学生信息', width=20, command=self.new_row)         self.right_top_button2 = ttk.Button(self.frame_right_top, text='更新选中学生信息', width=20,                                             command=self.updata_row)         self.right_top_button3 = ttk.Button(self.frame_right_top, text='删除选中学生信息', width=20,                                             command=self.del_row)            # 位置设置         self.right_top_title.grid(row=1, column=0, pady=10)         self.right_top_button1.grid(row=2, column=0, padx=20, pady=10)         self.right_top_button2.grid(row=3, column=0, padx=20, pady=10)         self.right_top_button3.grid(row=4, column=0, padx=20, pady=10)            # 整体区域定位         self.frame_left_top.grid(row=0, column=0, padx=2, pady=5)         self.frame_right_top.grid(row=0, column=1, padx=30, pady=30)         self.frame_center.grid(row=1, column=0, columnspan=2, padx=4, pady=5)         self.frame_bottom.grid(row=2, column=0, columnspan=2)            self.frame_left_top.grid_propagate(0)         self.frame_right_top.grid_propagate(0)         self.frame_center.grid_propagate(0)         self.frame_bottom.grid_propagate(0)            self.frame_left_top.tkraise() # 开始显示主菜单         self.frame_right_top.tkraise() # 开始显示主菜单         self.frame_center.tkraise() # 开始显示主菜单         self.frame_bottom.tkraise() # 开始显示主菜单            self.window.protocol("WM_DELETE_WINDOW", self.back)  # 捕捉右上角关闭点击         self.window.mainloop()  # 进入消息循环        def back(self):         StartPage(self.window) # 显示主窗口 销毁本窗口        def click(self, event):         self.col = self.tree.identify_column(event.x)  # 列         self.row = self.tree.identify_row(event.y)  # 行            print(self.col)         print(self.row)         self.row_info = self.tree.item(self.row, "values")         self.var_id.set(self.row_info[0])         self.var_name.set(self.row_info[1])         self.var_gender.set(self.row_info[2])         self.var_age.set(self.row_info[3])         self.right_top_id_entry = Entry(self.frame_left_top, state='disabled', textvariable=self.var_id,                                         font=('Verdana', 15))            print('')        def tree_sort_column(self, tv, col, reverse):  # Treeview、列名、排列方式         l = [(tv.set(k, col), k) for k in tv.get_children('')]         l.sort(reverse=reverse)  # 排序方式         # rearrange items in sorted positions         for index, (val, k) in enumerate(l):  # 根据排序后索引移动             tv.move(k, '', index)         tv.heading(col, command=lambda: self.tree_sort_column(tv, col, not reverse))  # 重写标题，使之成为再点倒序的标题        def new_row(self):         print('123')         print(self.var_id.get())         print(self.id)         if str(self.var_id.get()) in self.id:             messagebox.showinfo('警告！', '该学生已存在！')         else:             if self.var_id.get() != '' and self.var_name.get() != '' and self.var_gender.get() != '' and self.var_age.get() != '':                 # 打开数据库连接                 db = pymysql.connect("localhost", "root", "root", "student")                 cursor = db.cursor()  # 使用cursor()方法获取操作游标                 sql = "INSERT INTO student_k(id, name, gender, age) \                        VALUES ('%s', '%s', '%s', '%s')" % \                       (self.var_id.get(), self.var_name.get(), self.var_gender.get(), self.var_age.get())  # SQL 插入语句                 try:                     cursor.execute(sql)  # 执行sql语句                     db.commit()  # 提交到数据库执行                 except:                     db.rollback()  # 发生错误时回滚                     messagebox.showinfo('警告！', '数据库连接失败！')                 db.close()  # 关闭数据库连接                    self.id.append(self.var_id.get())                 self.name.append(self.var_name.get())                 self.gender.append(self.var_gender.get())                 self.age.append(self.var_age.get())                 self.tree.insert('', len(self.id) - 1, values=(                 self.id[len(self.id) - 1], self.name[len(self.id) - 1], self.gender[len(self.id) - 1],                 self.age[len(self.id) - 1]))                 self.tree.update()                 messagebox.showinfo('提示！', '插入成功！')             else:                 messagebox.showinfo('警告！', '请填写学生数据')        def updata_row(self):         res = messagebox.askyesnocancel('警告！', '是否更新所填数据？')         if res == True:             if self.var_id.get() == self.row_info[0]:  # 如果所填学号 与 所选学号一致                 # 打开数据库连接                 db = pymysql.connect("localhost", "root", "root", "student")                 cursor = db.cursor()  # 使用cursor()方法获取操作游标                 sql = "UPDATE student_k SET name = '%s', gender = '%s', age = '%s' \                  WHERE id = '%s'" % (self.var_name.get(), self.var_gender.get(), self.var_age.get(), self.var_id.get())  # SQL 插入语句                 try:                     cursor.execute(sql)  # 执行sql语句                     db.commit()  # 提交到数据库执行                     messagebox.showinfo('提示！', '更新成功！')                 except:                     db.rollback()  # 发生错误时回滚                     messagebox.showinfo('警告！', '更新失败，数据库连接失败！')                 db.close()  # 关闭数据库连接                    id_index = self.id.index(self.row_info[0])                 self.name[id_index] = self.var_name.get()                 self.gender[id_index] = self.var_gender.get()                 self.age[id_index] = self.var_age.get()                    self.tree.item(self.tree.selection()[0], values=(                     self.var_id.get(), self.var_name.get(), self.var_gender.get(),                     self.var_age.get()))  # 修改对于行信息             else:                 messagebox.showinfo('警告！', '不能修改学生学号！')        def del_row(self):         res = messagebox.askyesnocancel('警告！', '是否删除所选数据？')         if res == True:             print(self.row_info[0])  # 鼠标选中的学号             print(self.tree.selection()[0])  # 行号             print(self.tree.get_children())  # 所有行             # 打开数据库连接             db = pymysql.connect("localhost", "root", "root", "student")             cursor = db.cursor()  # 使用cursor()方法获取操作游标             sql = "DELETE FROM student_k WHERE id = '%s'" % (self.row_info[0]) # SQL 插入语句             try:                 cursor.execute(sql)  # 执行sql语句                 db.commit()  # 提交到数据库执行                 messagebox.showinfo('提示！', '删除成功！')             except:                 db.rollback()  # 发生错误时回滚                 messagebox.showinfo('警告！', '删除失败，数据库连接失败！')             db.close()  # 关闭数据库连接                id_index = self.id.index(self.row_info[0])             print(id_index)             del self.id[id_index]             del self.name[id_index]             del self.gender[id_index]             del self.age[id_index]             print(self.id)             self.tree.delete(self.tree.selection()[0])  # 删除所选行             print(self.tree.get_children())       # 学生查看信息界面 class StudentView:     def __init__(self, parent_window, student_id):         parent_window.destroy() # 销毁主界面            self.window = tk.Tk()  # 初始框的声明         self.window.title('关于')         self.window.geometry('300x450')  # 这里的乘是小x            label = tk.Label(self.window, text='学生信息查看', bg='green', font=('Verdana', 20), width=30, height=2)         label.pack(pady=20)            self.id = '学号:' + ''         self.name = '姓名:' + ''         self.gender = '性别:' + ''         self.age = '年龄:' + ''         # 打开数据库连接         db = pymysql.connect("localhost", "root", "root", "student")         cursor = db.cursor()# 使用cursor()方法获取操作游标         sql = "SELECT * FROM student_k WHERE id = '%s'" % (student_id) # SQL 查询语句         try:             # 执行SQL语句             cursor.execute(sql)             # 获取所有记录列表             results = cursor.fetchall()             for row in results:                 self.id = '学号:' + row[0]                 self.name = '姓名:' + row[1]                 self.gender = '性别:' + row[2]                 self.age = '年龄:' + row[3]         except:             print("Error: unable to fetch data")         db.close()      # 关闭数据库连接            Label(self.window, text=self.id, font=('Verdana', 18)).pack(pady=5)         Label(self.window, text=self.name, font=('Verdana', 18)).pack(pady=5)         Label(self.window, text=self.gender, font=('Verdana', 18)).pack(pady=5)         Label(self.window, text=self.age, font=('Verdana', 18)).pack(pady=5)            Button(self.window, text="返回首页", width=8, font=tkFont.Font(size=16), command=self.back).pack(pady=25)            self.window.protocol("WM_DELETE_WINDOW", self.back)  # 捕捉右上角关闭点击         self.window.mainloop()  # 进入消息循环        def back(self):         StartPage(self.window)  # 显示主窗口 销毁本窗口       # About页面 class AboutPage:     def __init__(self, parent_window):         parent_window.destroy() # 销毁主界面            self.window = tk.Tk()  # 初始框的声明         self.window.title('关于')         self.window.geometry('300x450')  # 这里的乘是小x            label = tk.Label(self.window, text='学生信息管理系统', bg='green', font=('Verdana', 20), width=30, height=2)         label.pack()            Label(self.window, text='作者：清晨的光明', font=('Verdana', 18)).pack(pady=30)         Label(self.window, text='blog.csdn.net/kdongyi', font=('Verdana', 18)).pack(pady=5)            Button(self.window, text="返回首页", width=8, font=tkFont.Font(size=12), command=self.back).pack(pady=100)            self.window.protocol("WM_DELETE_WINDOW", self.back)  # 捕捉右上角关闭点击         self.window.mainloop()  # 进入消息循环        def back(self):         StartPage(self.window)  # 显示主窗口 销毁本窗口       if __name__ == '__main__':     try:         # 打开数据库连接 连接测试         db = pymysql.connect("localhost", "root", "root", "student")         # 使用cursor()方法获取操作游标         cursor = db.cursor()         # 如果数据表不存在则创建表 若存在则跳过         # 设置主键唯一         sql = """CREATE TABLE IF NOT EXISTS student_k(                 id char(20) NOT NULL,                 name char(20) default NULL,                 gender char(5) default NULL,                  age char(5) default NULL,                 PRIMARY KEY (id)                                   ) ENGINE = InnoDB                 DEFAULT CHARSET = utf8                 """         cursor.execute(sql)         # 如果数据表不存在则创建表 若存在则跳过         sql = """CREATE TABLE IF NOT EXISTS admin_login_k(                         admin_id char(20) NOT NULL,                         admin_pass char(20) default NULL,                         PRIMARY KEY (admin_id)                         ) ENGINE = InnoDB                         DEFAULT CHARSET = utf8                         """         cursor.execute(sql)         # 如果数据表不存在则创建表 若存在则跳过         sql = """CREATE TABLE IF NOT EXISTS stu_login_k(                         stu_id char(20) NOT NULL,                         stu_pass char(20) default NULL,                         PRIMARY KEY (stu_id)                         ) ENGINE = InnoDB                         DEFAULT CHARSET = utf8                         """         cursor.execute(sql)            # 关闭数据库连接         db.close()            # 实例化Application         window = tk.Tk()         StartPage(window)     except:         messagebox.showinfo('错误！', '连接数据库失败！')