Objects created in Python do not have eyeball until Show or Hide called
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
When you create a pipeline object in the Python interpreter of the ParaView GUI, you do not get an eyeball next to the object until Show or Hide is called on the object. When creating a chain of filters, intermediate results are often not shown. Thus, there may be pipeline objects without eyeballs, and it is awkward to get them to show up.