python连接mysql

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

import os, sys
import time
import re
import MySQLdb

reload(sys)
sys.setdefaultencoding("utf8")


#源系统数据库连接
SOURCE_URL = "jdbc:mysql://xx.xx.xx.42:3306/risk?useUnicode=true&characterEncoding=utf-8"
print SOURCE_URL
# 源系统用户名
SOURCE_USER = "admin"
print SOURCE_USER
# 源系统密码
SOURCE_PASSWD = "admin@666"
print SOURCE_PASSWD
# 源系统数据库名称
SOURCE_DBNAME = "risk"
print SOURCE_DBNAME

#获取MYSQL连接
def openConn(hostStr, port, userStr, passwdStr, tableSchema):

    conn = MySQLdb.connect(host=‘%s‘%(hostStr), user=‘%s‘%(userStr), passwd=‘%s‘%(passwdStr),
                           db=‘%s‘%(tableSchema), port=port, charset="utf8", use_unicode="True")
    return conn

#获取查询结果
def getRs(conn, sql):
    try:
        cursor = conn.cursor();
        cursor.execute(sql);
        rows = cursor.fetchall();
        conn.commit();
        return rows;
    except Exception as  e:
        print (str(e))
        pass;
    finally:
        try:
            cursor.close();
        except:
            pass;

#执行SQL
def execSql( conn, sql):
    try:
        cursor = conn.cursor();
        cnt = cursor.execute(sql);
        conn.commit();
        return cnt
    except Exception as  e:
        print (str(e))
        pass;
    finally:
        try:
            cursor.close();
        except:
            pass;
    return -1



# 连接数据库：
def excuteSql_select(sql):
    # 获取源系统mysql连接
    if "mysql" in SOURCE_URL:
        mysqlStr = SOURCE_URL.split(":")
        conn = openConn(mysqlStr[2].replace("//", ""), int(mysqlStr[3].split("/")[0]), SOURCE_USER, SOURCE_PASSWD,SOURCE_DBNAME)
        return getRs(conn, sql)
    else:
        print "未知类型数据库"
        sys.exit(1)

# 连接数据库：
def excuteSql(sql):
    # 获取源系统mysql连接
    if "mysql" in SOURCE_URL:
        mysqlStr = SOURCE_URL.split(":")
        conn = openConn(mysqlStr[2].replace("//", ""), int(mysqlStr[3].split("/")[0]), SOURCE_USER, SOURCE_PASSWD,SOURCE_DBNAME)
        return execSql(conn, sql)
    else:
        print "未知类型数据库"
        sys.exit(1)
        
# 查询数据：
result_select = excuteSql_select("select count(*) from  LOANCARDINFO")
print ‘查询结果总条数：‘ + str(result_select[0][0])

# 执行操作：
result = excuteSql("insert into test values(3)")
print ‘插入数据成功：‘ + str(result)