可以写一个包含 yield from 语句的递归生成器来轻松解决这个问题。比如:from collections import Iterable def flatten(items, ignore_types=(str, bytes)): for x in items: if isinstance(x, Iterable) and not isinstance(x, ignore_types): yield from flatten(x) else: yield x items = [1, 2, [3,...
1.引入模块报错 from collections import Iterator,Iterable 报错: DeprecationWarning: Usingorimporting the ABCsfrom'collections'instead offrom'collections.abc'isdeprecated,andin3.8it will stop workingfromcollectionsimportIterator,Iterable 2.修改为: from collections.abc import Iterator,Iterable 善战者,求之于势,...
下列哪个对象不是可迭代对象: 提示:用isinstance(obj, Iterable)来判断对象obj是否是生成器对象, 使用前需要执行from collections import Iterable语句 A.obj = (x**2 for x in range(5))B.obj = {x:x*2 for x in range(10)}C.obj = map(int, '1234')D.obj = 1234...
关于下面代码,描述错误的是: from collections import Iterable from collections import Iterator r = range(10) print(isinstance(r, Iterable)) print(isinstance(r, Iterator)) l = list(r) print(l) t = tuple(r) print(t)A. range对象r是一个可迭代对象 B. range对象r不是一个迭代器 C...
解决步骤: 1.cd/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/pygal 2. vim _compat.py 3. from collections import Iterable 改为 from _collections_abc import Iterable 运行后发现还是报这个错 问题出现在这个文件中,collections 加上 .abc ...
接口中,这样做的好处是,所有实现了iterable接口的对象,都是可迭代的,而之前只有collection是可迭代的。...所以在JDK5之后,可以使用下面的foreach方法收集所有的对象: public static void forEach(Iterable iterable) { Iterato...
>>> from collections import Iterable >>> isinstance(fab, Iterable) False >>> isinstance(fab(5), Iterable) True 1. 2. 3. 4. 5. 每次调用 fab 函数都会生成一个新的 generator 实例,各实例互不影响: >>> f1 = fab(3) >>> f2 = fab(5) ...
from collections import Iterable def flatten(items, ignore_types=(str, bytes)): for x in items: if isinstance(x, Iterable) and not isinstance(x, ignore_types): yield from flatten(x) else: yield x items = [1, 2, [3, 4, [5, 6], 7], 8] ...
fromcollectionsimportIterable ImportError:cannot import name 'Iterable' from 'collections' Versions: Python 3.10.4 Oisin-Madded thebugSomething isn't workinglabelSep 5, 2022 Oisin-Massignedmichalk8Sep 5, 2022 Oisin-Madded a commit to Oisin-M/cellrank that referenced this issueSep 5, 2022 ...
in <module> from tabulate import tabulate # pylint: disable=import-error File "/usr/local/Cellar/azure-cli/2.30.0_1/libexec/lib/python3.10/site-packages/tabulate.py", line 16, in <module> from collections import Iterable ImportError: cannot import name 'Iterable' from 'collections' (/usr/...