注意：从python2.5版本以上就内置了SQLite3,所以可以直接使用
1.访问数据库的步骤
1.导入Python SQLite数据库模块
import sqlite3
2.建立数据库连接，返回Connection对象
con = sqlite3.connect(connectstring)
3.创建游标对象
cur = con.cursor()
4.使用Cursor对象的execute（）方法执行SQL命令返回结果集
cur.execute("create table category(id primary key,sort,name)")
cur.excute("insert into category values(1,1,'computer')")
5.获取游标的查询结果集
cur.execute("select * from catagory")
print(cur.fetchall())
6.数据库的提交和回滚
提交：con.commit()
回滚：con.rollback()
7.关闭Cursor对象和Connection对象
cur.close()
con.close()
2.程序设计步骤
2.1生成试题库
'''
import sqlite3
conn = sqlite3.connect('test.db')
cursor = conn.cursor()
cursor.execute('create table if not exists [exam]([question] varchar(80) null, [Answer_A] varchar(1) null,[Answer_B] varchar(1) null,[Answer_C] varchar(1) null,[Answer_D] varchar(1) null,[right_Answer] varchar(1) null)')
cursor.execute("insert into exam (question,Answer_A,Answer_B,Answer_C,Answer_D,right_Answer) values('夜郎自大中“夜郎”指的是现在哪个地方？','贵州','云南','广西','福建','A')")
cursor.execute("insert into exam (question,Answer_A,Answer_B,Answer_C,Answer_D,right_Answer) values('在中国历史上是谁发明了麻药？','孙思邈','华佗','张仲景','扁鹊','B')")
cursor.execute("insert into exam (question,Answer_A,Answer_B,Answer_C,Answer_D,right_Answer) values('京剧中的花旦指？','年轻男子','年轻女子','年长男子','年长女子','B')")
cursor.execute("insert into exam (question,Answer_A,Answer_B,Answer_C,Answer_D,right_Answer) values('篮球比赛每队几个人？','4','5','6','7','B')")
cursor.execute("insert into exam (question,Answer_A,Answer_B,Answer_C,Answer_D,right_Answer) values('在天愿作比翼鸟，在地愿为连理枝。讲述的是谁的爱情故事？','焦仲卿和刘兰芝','梁山伯与祝英台','崔莺莺和张生','杨贵妃和唐明皇','D')")
print(cursor.rowcount)
cursor.close()
conn.commit()
conn.close()
'''
2.2读取试题信息
'''
conn = sqlite3.connect('test.db')
cursor = conn.cursor()
cursor.execute('select * from exam')
values = cursor.fetchall()
cursor.close()
conn.close()
'''
2.3界面和逻辑设计
'''
import tkinter
from tkinter import *
from tkinter.messagebox import *
def callNext():
global k
global score
useranswer = r.get()
print(r.get())
if useranswer == values[k][5]:
showinfo("恭喜！","你答对了！")
score += 20
else:
showinfo("遗憾！","你错了哦！")
k = k + 1
if k >= len(values):
showinfo("提示","题目做完了")
return
timu["text"] = values[k][0]
radio1["text"] = values[k][1]
radio2["text"] = values[k][2]
radio3["text"] = values[k][3]
radio4["text"] = values[k][4]
r.set('E')
def callResult():
showinfo("你的得分",str(score))
'''
界面布局代码：
'''
root = tkinter.Tk()
root.title('Python智力问答游戏')
root.geometry("500x200")
r = tkinter.StringVar()
r.set('E')
k = 0
score = 0
timu = tkinter.Label(root,text = values[k][0])
timu.pack()
f1 = Frame(root)
f1.pack()
radio1 = tkinter.Radiobutton(f1,variable = r,value = 'A',text = values[k][1])
radio1.pack()
radio2 = tkinter.Radiobutton(f1,variable = r,value = 'B',text = values[k][2])
radio2.pack()
radio3 = tkinter.Radiobutton(f1,variable = r,value = 'C',text = values[k][3])
radio3.pack()
radio4 = tkinter.Radiobutton(f1,variable = r,value = 'D',text = values[k][4])
radio4.pack()
f2 = Frame(root)
f2.pack()
Button(f2,text = '下一题',command = callNext).pack(side = LEFT)
Button(f2,text = '结 果',command = callResult).pack(side = LEFT)
root.mainloop()
'''