Class, state, and representation
In some cases, we might be creating a server that will provide data to remote clients. In other cases, we might want to consume data from remote computers. We may have a hybrid situation where our application is both a client of remote computers and servers to mobile applications. There are many situations where our application works with objects that are persisted remotely.
We need a way to transmit objects from process to process. We can decompose the larger problem into two smaller problems. The inter-networking protocols can help us transmit bytes from a process on one host to a process on another host. Serialization can transform our objects into bytes.
Unlike the object state, we transmit class definitions through an entirely separate and very simple method. We exchange class definitions via the source code. If we need to supply a class definition to a remote host, we send the Python source code to that host. The code must be properly installed to be...
