[ 35s] @pytest.mark.skipif(sys.version_info < (3, 7), reason='collections not available?') [ 35s] def test_collections_deprecation(): [ 35s] with pytest.warns(DeprecationWarning): [ 35s] > from collections import Hashable # NOQA [ 35s] E ImportError: cannot import name 'Hashable' fro...
from collections.abc import Mapping 如果你仍然想使用’Mapping’,你可以从内置的’types’模块中导入它: from types import MappingType as Mapping 另外,如果你想创建一个Mapping类型的实例,你可以使用collections.abc模块中的其他抽象基类,例如’Sized’, ‘Iterable’, ‘Container’, ‘Callable’, ‘Hashable’,...
因此,必須自己更改 Lib\site-packages\pygal_compat.py` 的內容 # from collections import Iterable # Line 23try
base import clone_key, get_name_from_key, tokenize 14 from dask.core import flatten, ishashable, keys_in_tasks, reverse_dict 15 from dask.highlevelgraph import HighLevelGraph, Layer ImportError: cannot import name 'clone_key' from partially initialized module 'dask.base' (most likely due to...
我们可以使用Collections::nCopies来实现期望的结果: private static <T> List<T> transform(Map<? extends T, Integer> map) { return map.entrySet().stream() .map(entry -> Collections.nCopies(entry.getValue(), entry.getKey())) .flatMap(Collection::stream) .collect(Collectors.toList());} Ideo...