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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def mix_generators(generator_list):
 """Given python generators, generate from one, then from another, etc."""

  i = 0
  l = len(generator_list)
  stopiters_seen = 0
  while stopiters_seen <= l:
    try:
      yield six.next(generator_list[i % l])
      i += 1
      stopiters_seen = 0
    except StopIteration:
      i += 1
      stopiters_seen += 1