Added comments to structure.py
Added comments to structure.py

hacktothefuture/hilo,ConnorMcMahon/hacktothefuture,ConnorMcMahon/hacktothefuture,logandaniels/hacktothefuture,hacktothefuture/hilo,logandaniels/hacktothefuture,ConnorMcMahon/hacktothefuture