python向数据库insert乱码怎么解决？

# -*- coding:utf8 -*-

#首先用于确定编码，加上这句

conn=MySQLdb.connect(host='localhost',user='root',passwd='****',db='kfxx',port=3306,charset='utf8')

cur=conn.cursor()

#解决乱码问题

html_1 = urllib2.urlopen(cityURL,timeout=120).read()

mychar = chardet.detect(html_1)

bianma = mychar['encoding']

if bianma == 'utf-8' or bianma == 'UTF-8':

      html = html_1

else :

      html = html_1.decode('gb2312','ignore').encode('utf-8')

chapter_soup = BeautifulSoup(html)

city = chapter_soup.find('div',class_ = 'row-fluid').find('h1').get_text()

province = chapter_soup.find('a',class_ = 'province').get_text()

pmNum = chapter_soup.find('div',class_ = 'row-fluid').find('span').get_text()

suggest = chapter_soup.find('div',class_ = 'row-fluid').find('h2').get_text()

rand = chapter_soup.find('div',class_ = 'row-fluid').find('h2').find_next_sibling('h2').get_text()

face = chapter_soup.find('div',class_ = 'span4 pmemoji').find('h1').get_text()

conclusion = chapter_soup.find('h1',class_ = 'review').get_text()

print city.encode('utf-8')

cur.execute('insert into t_pm values(\''+city.encode('utf-8')

            +'\',\''+province.encode('utf-8')

            +'\',\''+pmNum.encode('utf-8')

            +'\',\''+suggest.encode('utf-8')

            +'\',\''+rand.encode('utf-8')

            +'\',\''+conclusion.encode('utf-8')+'\')')