I'm not sure if this is common knowledge or not but you can store data in Python with as many arrays inside other arrays as you want.

test = [[1, 2, 3], [4, 5, 6], [7, 8, [9, 10]]]  
print test[2][2][0]  

>>>9

print test[0]  

>>>[1, 2, 3]

print test[0][1]  

>>>2

Just something I thought was cool.