They come as a set, but if the tags don't come with the .png files, please set the tag to "set:python" without the quotation marks, so that only the buildings within the set appear within an NPC city or planet, and are not mixed in with buildings that don't look right with these.
These will go in C.H.E.F. Order, because I like acronyms.... and apparently this order makes a really good one.
Spoiler
The City Hall:
https://s28.postimg.org/6qwgmxiql/Python_Palace.png
The House:
https://s28.postimg.org/djwtj79jx/Pytho ... idence.png
The Entertainment:
https://s28.postimg.org/6s6egckkd/Python_Plaza.png
The Factory:
https://s28.postimg.org/rrmi7um8t/Python_Production.png
https://s28.postimg.org/6qwgmxiql/Python_Palace.png
The House:
https://s28.postimg.org/djwtj79jx/Pytho ... idence.png
The Entertainment:
https://s28.postimg.org/6s6egckkd/Python_Plaza.png
The Factory:
https://s28.postimg.org/rrmi7um8t/Python_Production.png