input: Write a python function to find the most frequent element in a list using the Counter class from the collections module.
  assert most_frequent([6, 5, 8, 3, 6, 5, 8, 6]) == 6
  assert most_frequent([1, 2, 3, 1, 2, 1, 4, 5]) == 1
  assert most_frequent(['a', 'b', 'a', 'c', 'a', 'b']) == 'a'
output: from collections import Counter
  
  def most_frequent(lst):
      counter = Counter(lst)
      return counter.most_common(1)[0][0]