python小应用：Oracle数据库连接及查询

为批量巡检工具准备
仅作为练习使用

import cx_Oracle


class Database:
    # 定义基本属性
    c_user = 'admin'
    __c_pass = 'admin'
    c_url = 'localhost:1521/orcl'
    # 定义构造方法

    def __init__(self,u,p,l):
        self.c_user = u
        self.__c_pass = p
        self.c_url = l
    # 赋值：密码

    def set_pass(self):
        c_pass = self
        return
    # 取值：密码

    def p_s_get(self):
        return self.__c_pass
    # 检查连接是否可用

    def c_stat(self):
        try:
            conn = cx_Oracle.connect(self.c_user,self.__c_pass,self.c_url)
            conn.close()
            c = self.c_user+'@'+self.c_url+' 连接正常！'
            return c
        except cx_Oracle.DatabaseError as err:
            c = self.c_user+'@'+self.c_url+' 连接失败！  错误信息为：'+format(err)
            return c
    # 执行sql

    def exe_sql(self, sql):
        conn = cx_Oracle.connect(self.c_user, self.__c_pass, self.c_url)
        curs = conn.cursor()
        curs.execute(sql)
        res = curs.fetchall()
        curs.close()
        conn.close()
        return res
    # 用户状态查询

    def c_usr_stat(self):
        sql = """SELECt username,account_status,lock_date,expiry_date from dba_users order by 2,1"""
        try:
            conn = cx_Oracle.connect(self.c_user, self.__c_pass, self.c_url)
            curs = conn.cursor()
            curs.execute(sql)
            c = curs.fetchall()
            curs.close()
            conn.close()
            return c
        except cx_Oracle.DatabaseError as err:
            c = '查询错误，错误信息为：'+format(err)
            return c