python读取数据库(oracle)

from common.readconfig import ReadConfig
import cx_Oracle


class HandleOracle(object):

    def __init__(self, sec):
        self.data = ReadConfig()  # 读取数据库配置文件
        ip = self.data.get_db(sec, "ip")
        user = self.data.get_db(sec, "user")
        pwd = self.data.get_db(sec, "pwd")
        port = '1521'
        sid = self.data.get_db(sec, "sid")
        self.conn = cx_Oracle.connect(user + "/" + pwd + "@" + ip + ":" + port + "/" + sid)  # 连接数据库
        self.cur = self.conn.cursor()   # 连接游标

    def query_sql(self, v_sql):
        """执行查询sql"""
        try:
            self.cur.prepare(v_sql)
        except cx_Oracle.Error as e:
            print(e)
        self.cur.execute(v_sql)
        return self.cur.fetchall()

    def insert_sql(self, v_sql, date):
        try:
            self.cur.prepare(v_sql)
        except cx_Oracle.DatabaseError as e:
            print(e)
        self.cur.execute(v_sql,date)
        self.conn.commit()

    def delete_sql(self,v_sql):
        try:
            self.cur.parse(v_sql)
        except cx_Oracle.DatabaseError as e:
            print(e)
        self.cur.execute(v_sql)
        self.conn.commit()

    def close_db(self):
        """关闭数据库连接"""
        self.cur.close()
        self.conn.close()


if __name__ == '__main__':
    test = HandleOracle('HTWBDB')
    v_sql = "select * from  user"
    for i in test.query_sql(v_sql):
        print(i)