Arduino is a developmental free software and hardware organization that provides an electronic prototyping platform that allows users to create electronic objects. To write interfaces with expanded communication in the software, the java library must be used with that purpose to fasten the interface functions. Many java libraries can be used such as java.io, java.lang, java.awt or java.util.
When assigning values to a Variable in python, the + operator sums the values assigned to the variable into a single value hence there won't be any space between the values assigned .