sqlite学习笔记

#!/usr/bin/env python
# -*- coding: utf-8 -*-

import os,sqlite3

class DBSqlite():
    """ sqlite3数据库相关操作 """
    def __init__(self):
        pass

    def createOperate(self,dbFile):
        """创建数据库操作"""
        # 初始数据:
        if os.path.isfile(dbFile,createSql):
            print("-- remove s%--" %dbFile)
            os.remove(dbFile)
        conn = sqlite3.connect(dbFile)
        try:
            cursor = conn.cursor()
            cursor.execute(createSql)
            cursor.close()
            conn.commit()
        except:
            pass
        finally:
            conn.close()
            print("create dbs close")

    def insertOperate(self,dbFile,insertSql):
        """插入操作"""
        conn = sqlite3.connect(dbFile)
        try:
            cursor = conn.cursor()
            cursor.execute(insertSql)
            # cursor.execute(r"insert into user values ('A-002', 'Bart', 62)")
            # cursor.execute(r"insert into user values ('A-003', 'Lisa', 78)")
            cursor.close()
            conn.commit()
        except:
            pass
        finally:
            conn.close()
            print("insert dbs close")


    def queryOperate(self,dbFile,querySql):
        """查询操作"""
        conn = sqlite3.connect(dbFile)
        try:
            cursor = conn.cursor()
            cursor.execute(r"SELECT * FROM user ;")
            values = cursor.fetchall()
            cursor.close()
            conn.commit()
        except:
            pass
        finally:
            conn.close()
            # print(values)
            print("query dbs close")
            return values


    def deleteOperate(self):
        """删除操作"""


if __name__ == '__main__':
    print("--main--")
    dbFile = os.path.join(os.path.dirname(__file__), 'test.db')
    createSql = 'create table user(id varchar(20) primary key, name varchar(20), score int)'
    insertSql = r"insert into user values ('A-005', 'Ddam', 97)"
    querySql = r"SELECT * FROM user;"
    # print(dbFile)
    dbs = DBSqlite()
    # dbs.createOperate(dbFile,createSql)
    dbs.insertOperate(dbFile,insertSql)
    result = dbs.queryOperate(dbFile,querySql)
    print(result)
    print("--end--")