Python 如何在一个列表中插入多个元素？
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How to insert multiple elements into a list?
提问by AlanH
In JavaScript, I can use spliceto insert an array of multiple elements in to an array: myArray.splice(insertIndex, removeNElements, ...insertThese)
在 JavaScript 中，我可以使用splice将多个元素的数组插入到数组中：myArray.splice(insertIndex, removeNElements, ...insertThese)
But I can't seem to find a way to do something similar in Python withouthaving concat lists. Is there such a way?
但是我似乎无法找到一种方法在没有concat 列表的情况下在 Python 中做类似的事情。有这样的方法吗？
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]
例如myList = [1, 2, 3]，我想otherList = [4, 5, 6]通过调用插入myList.someMethod(1, otherList)来获取[1, 4, 5, 6, 2, 3]
回答by mgilson
To extend a list, you just use list.extend. To insert elements from any iterable at an index, you can use slice assignment...
要扩展列表，您只需使用list.extend. 要在索引处插入来自任何可迭代对象的元素，您可以使用切片赋值...
>>> a = list(range(10))
>>> a
[0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
>>> a[5:5] = range(3)
>>> a
[0, 1, 2, 3, 4, 0, 1, 2, 5, 6, 7, 8, 9]
回答by RFV5s
Python lists do not have such a method. Here is helper function that takes two lists and places the second list into the first list at the specified position:
Python 列表没有这样的方法。这是一个辅助函数，它接受两个列表并将第二个列表放入指定位置的第一个列表中：
def insert_position(position, list1, list2):
return list1[:position] + list2 + list1[position:]
