# -*- coding: utf-8 -*-__author__ = 'djstava@gmail.com'import loggingimport pymysqlclass MySQLCommand(object):  def __init__(self,host,port,user,passwd,db,table):    self.host = host    self.port = port    self.user = user    self.password = passwd    self.db = db    self.table = table  def connectMysql(self):    try:      self.conn = pymysql.connect(host=self.host,port=self.port,user=self.user,passwd=self.password,db=self.db,charset='utf8')      self.cursor = self.conn.cursor()    except:      print('connect mysql error.')  def queryMysql(self):    sql = "SELECT * FROM " + self.table    try:      self.cursor.execute(sql)      row = self.cursor.fetchone()      print(row)    except:      print(sql + ' execute failed.')  def insertMysql(self,id,name,sex):    sql = "INSERT INTO " + self.table + " VALUES(" + id + "," + "'" + name + "'," + "'" + sex + "')"    try:      self.cursor.execute(sql)    except:      print("insert failed.")  def updateMysqlSN(self,name,sex):    sql = "UPDATE " + self.table + " SET sex='" + sex + "'" + " WHERE name='" + name + "'"    print("update sn:" + sql)    try:      self.cursor.execute(sql)      self.conn.commit()    except:      self.conn.rollback()  def closeMysql(self):    self.cursor.close()    self.conn.close()