Accessing all elements in nested lists (4)

A much shorter version of:

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

i = 0
while i < len(samples):
  j = 0
  while j < len(samples[0]):
    print samples[i][j], "\t",
    j = j+1
  print
  i = i+1

is:

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

for i in samples:
  for j in i:
    print j, "\t",
  print