  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': _('`{input}` is not a valid boolean.')
 </s> add         'invalid': _('"{input}" is not a valid boolean.') </s> remove         'invalid_choice': _('`{input}` is not a valid choice.')
 </s> add         'invalid_choice': _('"{input}" is not a valid choice.') </s> remove         'invalid': _('`{input}` is not a valid boolean.')
 </s> add         'invalid': _('"{input}" is not a valid boolean.')
        '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
 swap backticks for double quotes 
rest_framework/fields.py