问题：pymysql 连接数据库的时候出现：UnicodeEncodeError: 'latin-1' codec can't encode character u'\u201c' in position 0: ordinal not in range(256)
解决：连接参数里增加charset="utf8" 参数即可。db = pymysql.connect(host, user, passwd, db, use_unicode=True, charset="utf8")