input: Write a python function to search for a number in a list and return True if found, otherwise return False.
  assert search([5, 8, 2, 10, 48, 41], 8) == True
  assert search([5, 8, 2, 10, 48, 41], 3) == False
  assert search([], 1) == False
  assert search([1, 2, 3, 4, 5], 4) == True
output: def search(lst, num):
      return num in lst