Hide an empty line through Python IF statement in FME Workbench

Question

I am trying to set a rule that would move up filled lines and hide an empty line (it can be on any line) in a postal address through PythonCaller transformer. I have a database table consisted of address elements (organisation_name, department_name, house_name, house_number, street_name, specific_locality, town, post_code...) and these elements are somehow ordered on address lines.

Here is an example:

house_name
house_number, street_name
town
post_code

What I need to do now is to hide the empty line in the middle (address_line_3) by moving the last two address lines up (town_line and post_code_line).

So it's going to look like this:

house_name
house_number, street_name
town
post_code

The order of the address elements varies as well as occurrence of the empty lines. Because I am a beginner in Python I can only guess how to do it. If there is any other transformer in FME Workbench I can use, I welcome your ideas.

• user59200: This may be of use. I hope this helps!

Answer 1

I solved this issue by adding 'Tester' and 'AttributeCreator' transformers instead of coding it in 'PythonCaller' transformer. In the Tester I selected 'line3' as a left value (transformers must be connected to see the attributes set previously) and empty string as a right value. In the AttributeCreator I set the lines in order and I added a NULL value for 'line5'.