python 之 sqlite3

 # -*- coding: utf-8 -*-
 ''' 创建数据库日志，三列为时间 身份证号和备注名'''
 import os
 import sys
 import sqlite3
 import datetime 

 class sqlite3_log():

     def __init__(self):
         pass

     #连接表,表名为参
     def connect_db(self,db_name):
         conn = sqlite3.connect(db_name)
         return conn

     #关闭连接,表名为参
     def close_db(self,conn):
         conn.close() 

      #建立一个表 表名应该使用参数确定
     def create_table(self,conn,table_name):
         cu = conn.cursor()
         cu.execute('''create table if not exists %s
                     (time_now     text   primary key   not null,
                      id_card    float          not null,
                      name      text           not null);''' %table_name)
         conn.commit()

     #插入数据
     def insert_values(self, table_name, datetime, idcard, name):
         cu = conn.cursor()
         cu.execute("insert into %s values ( ?, ?, ?)" %table_name, (datetime, idcard, name))
         conn.commit() 

     #查询表是否存在
     def query_table(conn,db_name,table_name):
         cu = conn.cursor()
         cu.execute("select %s from %s where type = 'table' " %db_name, table_name )
         return cu.fetchall()

     #逻辑流程
     def run_log(self, db_name, table_name, tim, idcard, name):
         global conn
         #检测数据库表是否存在
         if os.path.exists(db_name):
             print "the table is exists"
             conn = sqlite3.connect(db_name)

         else:
             print "######"
             conn = self.connect_db(db_name)

         #检测表是否存在并创建表
         print "create table if not exists"
         self.create_table(conn, table_name)
         print "create table-conn"
         #a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
         print "insert finished"
         self.insert_values(table_name, tim, idcard, name)
         #关闭连接
         self.close_db(conn)

 def test():
     #测试代码
     db_name = './Peeer.db'
     a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
     g = "wei"
     #print time1
     sq = sqlite3_log()
     conn = sq.connect_db(db_name)
     #sq.create_table(conn, "talbe_sqlite")

     sq.insert_values("talbe_sqlite" , a , "", g)
     sq.insert_values("talbe_sqlite" , a, "", "guo")
     sq.close_db(conn)

 if __name__ == '__main__':
     #测试逻辑流程
     sq = sqlite3_log()
     a = datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S')
     sq.run_log('./Peeeeer.db', "talbe_sqlite", a, "", "guo")

　　此代码已经测试，可以直接调用此类把数据写入。