code: def find_last_sublist(list_, sublist):
      
      for i in reversed(range(len(list_) - len(sublist) + 1)):
          if list_[i] == sublist[0] and list_[i:i + len(sublist)] == sublist:
              return i
      return None
docs: Given a list, find the last occurance of a sublist within it.
  
      Returns:
          Index where the sublist starts, or None if there is no match.