input: Write a function to create a lambda expression in Python to filter a list of integers greater than 50. Return the filtered list.
  filtered_list = list(filter(lambda x: x > 50, list1))
  assert filtered_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
output: def filtered_list(list1):
      return list(filter(lambda x: x > 50, list1))