python3.4+tornado 查询 mysql 数据库出现错误,见下文

pymysql.err.InternalError: (1267, "Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8_general_ci,COERCIBLE) for operation '='")

如下语句创建表
create table members(name varchar(40) not null primary key, password varchar(40) not null, question varchar(100) not null, answer varchar(100) not null);

查询语句，name是中文字符
cursor.execute("SELECT name FROM members WHERE name='%s'" % name)

用pymysql-0.6.2连接数据库,后面的charset="utf8"没加出现另一个错误
self.db = pymysql.connect("localhost","root","DXC","demo",charset="utf8")
如下：
UnicodeEncodeError: 'latin-1' codec can't encode characters in position 37-40: ordinal not in range(256)

在华莽用户组也发了一遍https://groups.google.com/forum/#!topic/Python-cn/qVK95FAH0JI