Accessing all elements in nested lists (2)

First step:

samples = [["x","y","z"],[12,32,7],[12,40,7]]

i = 0
while i < len(samples):
  print samples[i]
  i = i+1

Prints:

['x', 'y', 'z']
[12, 32, 7]
[12, 40, 7]