Fix a deprecation warning (#2746)

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Santiago Castro 2020-07-29 07:54:14 -04:00 committed by GitHub
parent b9381c3258
commit 17678229b4
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@ -1,5 +1,5 @@
from abc import ABC from abc import ABC
from collections import Mapping, Sequence from collections.abc import Mapping, Sequence
from copy import copy from copy import copy
from typing import Any, Callable, Union from typing import Any, Callable, Union