sock == None -> sock is None
sock == None -> sock is None

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