python通過配置文件連接數據庫

今天主要是通過讀取配置文件(ini文件)獲取數據庫表的ip,端口,用戶,密碼,表名等,使用pysql來操作數據庫,具體的ini配置文件的操作參見我另一篇博客:https://www.cnblogs.com/jiyanjiao-702521/p/9420343.html

詳細代碼如下:

　　

import pymysql
from config_parser import cconfigparser

class connectMySQL(object):
    def  __init__(self,hostname,user,password,dbname,port):
        db_config = {
            'host': hostname,
             'port': port,
             'user': user,
             'password': password,
             'db': dbname
            }
        self.conn = pymysql.connect(**db_config)
    def get_cursor(self):
        return self.conn.cursor()

    def querydb(self,sqlstring):
        cursor = self.get_cursor()
        try:
            cursor.execute(sqlstring)
            results = cursor.fetchall()
            for row in results:
                print(row)
        except:
            self.logger.error('Error:unable to fetch data')
if __name__ == '__main__':

    cccon = cconfigparser('C:\\Users\\lenovo\\Desktop\\config.ini')
    host = cccon.get('db_config_CD','host')
    port = int(cccon.get('db_config_CD','port'))
    print('port',port)
    user = cccon.get('db_config_CD','user')
    password = cccon.get('db_config_CD','password')
    db = cccon.get('db_config_CD','db')

    sqlstring = 'select table_name from information_schema.tables where table_schema=\'jac\''
    c = connectMySQL(host, user, password, db, port)
    c_chendu = c.querydb(sqlstring)