Fix for py3x, again
Fix for py3x, again

lzedl/PyMySQL,wraziens/PyMySQL,wraziens/PyMySQL,xjzhou/PyMySQL,nju520/PyMySQL,xjzhou/PyMySQL,mosquito/Tornado-MySQL,boneyao/PyMySQL,anson-tang/PyMySQL,yeyinzhu3211/PyMySQL,methane/PyMySQL,pymysql/pymysql,eibanez/PyMySQL,yeyinzhu3211/PyMySQL,DashaChuk/PyMySQL,NunoEdgarGub1/PyMySQL,Ting-y/PyMySQL,pulsar314/Tornado-MySQL,lzedl/PyMySQL,Geoion/Tornado-MySQL,MartinThoma/PyMySQL,eibanez/PyMySQL,jheld/PyMySQL,PyMySQL/Tornado-MySQL,modulexcite/PyMySQL,PyMySQL/PyMySQL