如何将多个元素插入到列表中?
问题描述
在 JavaScript 中，我可以使用 splice 将包含多个元素的数组插入到数组中:myArray.splice(insertIndex, removeNElements, ...insertThese).
In JavaScript, I can use splice to insert an array of multiple elements in to an array: myArray.splice(insertIndex, removeNElements, ...insertThese).
但我似乎无法在 Python 中找到一种方法来做类似的事情没有有 concat 列表.有没有这样的方法?(已经有一个关于插入单项的问答，而不是多个.)
But I can't seem to find a way to do something similar in Python without having concat lists. Is there such a way? (There is already a Q&A about inserting single items, rather than multiple.)
例如 myList = [1, 2, 3] 我想通过调用 myList.someMethod 插入 得到otherList = [4, 5, 6](1, otherList)[1, 4, 5, 6, 2, 3]
For example myList = [1, 2, 3] and I want to insert otherList = [4, 5, 6] by calling myList.someMethod(1, otherList) to get [1, 4, 5, 6, 2, 3]
解决方案
要扩展列表，只需使用 list.extend.要在索引处插入任何可迭代的元素，您可以使用切片分配...
To extend a list, you just use list.extend. To insert elements from any iterable at an index, you can use slice assignment...
>>> a = list(range(10))
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> a[5:5] = range(10, 13)
>>> a
[0, 1, 2, 3, 4, 10, 11, 12, 5, 6, 7, 8, 9]
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