diff --git a/youtube_dl/compat.py b/youtube_dl/compat.py index 6cd7abd24..8910a4dac 100644 --- a/youtube_dl/compat.py +++ b/youtube_dl/compat.py @@ -3473,11 +3473,12 @@ except ImportError: def new_child(self, m=None, **kwargs): m = m or {} m.update(kwargs) - return compat_collections_chain_map(m, *self.maps) + # support inheritance ! + return type(self)(m, *self.maps) @property def parents(self): - return compat_collections_chain_map(*(self.maps[1:])) + return type(self)(*(self.maps[1:])) # compat_re_Pattern, compat_re_Match