  class ListField(Field):
      child = None
      initial = []
      default_error_messages = {
          'not_a_list': _('Expected a list of items but got type `{input_type}`.')
      }
  
      def __init__(self, *args, **kwargs):
          self.child = kwargs.pop('child', copy.deepcopy(self.child))
          assert self.child is not None, '`child` is a required argument.'
 
</s> remove         'not_a_list': _('Expected a list of items but got type `{input_type}`.')
 </s> add         'not_a_list': _("Expected a list of items but got type `{input_type}`.") </s> remove         'invalid_choice': _('`{input}` is not a valid choice.'),
        'not_a_list': _('Expected a list of items but got type `{input_type}`.')
 </s> add         'invalid_choice': _("`{input}` is not a valid choice."),
        'not_a_list': _("Expected a list of items but got type `{input_type}`.") </s> remove         'invalid': _('Date has wrong format. Use one of these formats instead: {format}.'),
        'datetime': _('Expected a date but got a datetime.'),
 </s> add         'invalid': _("Date has wrong format. Use one of these formats instead: {format}."),
        'datetime': _("Expected a date but got a datetime."), </s> remove         'invalid': _('Datetime has wrong format. Use one of these formats instead: {format}.'),
        'date': _('Expected a datetime but got a date.'),
 </s> add         'invalid': _("Datetime has wrong format. Use one of these formats instead: {format}."),
        'date': _("Expected a datetime but got a date."), </s> remove         'invalid': _('Invalid data. Expected a dictionary, but got {datatype}.')
 </s> add         'invalid': _("Invalid data. Expected a dictionary, but got {datatype}.")
        'not_a_list': _("Expected a list of items but got type `{input_type}`.")
  class ListField(Field):
      child = None
      initial = []
      default_error_messages = {
        'not_a_list': _("Expected a list of items but got type `{input_type}`.")
      }
  
      def __init__(self, *args, **kwargs):
          self.child = kwargs.pop('child', copy.deepcopy(self.child))
          assert self.child is not None, '`child` is a required argument.'
keep keep keep keep replace keep keep keep keep keep
 use double quotes for user visible strings; end user visible strings in full stops; add some missing translation tags 
rest_framework/fields.py