input: Write a function to create a lambda expression in Python to filter a list of integers greater than 50.
  
  assert filtered_list([45, 12, 52, 89, 33, 99])==[52, 89, 99]
  assert filtered_list([1, 2, 3, 4, 5, 50])==[]
  assert filtered_list([51, 52, 53])==[51, 52, 53]
  assert filtered_list([])==[]
  assert filtered_list([-1, -50, 51])==[51]
output: def filtered_list(lst):
      return list(filter(lambda x: x > 50, lst))