To make sure all items added to lists in the box are also converted, all lists are covered into BoxList. It's possible to initiate these directly and use them just like a Box.

from box import BoxList
my_boxlist = BoxList({'item': x} for x in range(10))
#  <BoxList: [<Box: {'item': 0}>, <Box: {'item': 1}>, ...
my_boxlist[5].item
# 5

to_list

Transform a BoxList and all components back into regular list and dict items.

my_boxlist.to_list()
# [{'item': 0},
#  {'item': 1},
#  ...