Build scene in Blender using Python

Hello, I need a script that builds a very realistic scene of a warehouse just using python. The script will import elements one by one from a directory, set the lights, etc.
The warehouse will consist of several corridors with racks containing pallets, which will contain different box types. The script should create every pallet by piling objects one by one.
You can use free FBX elements from the web for the project, including a photorealistic starting environment.

Here you can find a list of what can be done:
https://www.freelancer.com/contest/I-need-a-hyperrealistic-warehouse-scene-in-UnityUnrealBlenderVray-etc-1846258/entries

Thanks.