Python 2 dimensional arrays or inner arrays.

Programmers can get confused when building a two-dimensional arrays

Lets create an apartment building with 27 floors and 18 apartment units on each floor from a to r. Starting with 1a to 27r. The solution is to create an inner array of two elements that become a single element of the outer array. Each element in apartment represents a unit consisting of a of a floor and a apt letter. I have demonstrated using Python how you first create the inner array with new then append to the outer array apt

apt= []
for i in range(1,28):
  for j in range(97, 115):
    new = [i , chr(j)]
    apt.append(new)
 
print apt