python之pymysql

import pymysqlfrom pymysql.cursors import DictCursor# coon = pymysql.connect(host='211.149.218.16',port=3306,user='jxz',passwd='123456',db='jxz',charset='utf8')# cur = coon.cursor(DictCursor)#创建游标,仓库管理员,指定游标类型，返回字典# sql='select * from stu limit 2,9;'# # insert_sql = 'insert into stu VALUE (89,"nhy");'# # cur.execute(insert_sql)# cur.execute(sql)#执行sql语句# for c in cur:#直接循环游标，每次循环的时候就是每一列的数据#     print(c)# # res = cur.fetchall()#获取sql语句执行的结果,一次性所有获取# # coon.commit()#提交# # print(res[0][1])# cur.close()# coon.close()def op_mysql(host,user,passwd,db,sql,charset='utf8',port=3306):    import pymysql    from pymysql.cursors import DictCursor    coon = pymysql.connect(host=host,user=user,passwd=passwd,db=db,charset=charset,port=port)    cur = coon.cursor(DictCursor)#指订返回数据的类型是字典    cur.execute(sql)    if sql.strip().startswith('select'):        res = cur.fetchall()    else:        coon.commit()        res = 'ok'    cur.close()    coon.close()    print(res)    return res