exec="insert into register(login_name,client_name,password,telephone,fax,mobile,province,city,county,bank,bank_id,address,email,postalcode)value('"+login_name+"','"+client_name+"','"+password1+"','"+telephone+"','"+fax+"','"+mobile+"','"+province+"','"+city+"',
'"+county+"','"+bank+"','"+bank_id+"','"+address+"','"+email+"','"+postalcode+"')"
conn.execute exec
+号是什么意思啊？