code: def sequence(self, struct, size=1000, tree_depth=1, append_callable=None):
          
          if not tree_depth:
              return self._map_type()
          _struct = struct()
          add_struct = _struct.append if not append_callable \
              else getattr(_struct, append_callable)
          for x in range(size):
              add_struct(self.sequence(
                  struct, size, tree_depth-1, append_callable))
          return _struct
docs: Generates random values for sequence-like objects
  
              @struct: the sequence-like structure you want to fill with random
                  data
              @size: #int number of random values to include in each @tree_depth
              @tree_depth: #int dict tree dimensions size, i.e.
                  1=|(value1, value2)|
                  2=|((value1, value2), (value1, value2))|
              @append_callable: #callable method which appends/adds data to your
                  sequence-like structure - e.g. :meth:list.append
  
              -> random @struct
              ..
                  from collections import UserList
                  from vital.debug import RandData
  
                  class MySequence(UserList):
                      pass
  
                  rd = RandData(int)
  
                  my_seq = MySequence()
                  rd.sequence(my_seq, 3, 1, my_seq.append)
                  # -> [88508293836062443, 49097807561770961, 55043550817099444]
              ..