如何在列表中压缩列表 [英] How to zip lists in a list

问题描述

我想压缩以下列表：

I want to zip the following list of lists:

>>> zip([[1,2], [3,4], [5,6]])
[[1,3,5], [2,4,6]]

只有当列表被分割时，才能通过当前的 zip 实现来实现。转换为单个组件：

This could be achieved with the current zip implementation only if the list is split into individual components:

>>> zip([1,2], [3,4], [5,6])
   (1, 3, 5), (2, 4, 6)]

不知道如何分割列表并将各个元素传递给 zip 。一个功能性的解决方案是首选。

Can't figure out how to split the list and pass the individual elements to zip. A functional solution is preferred.

推荐答案

试试这个：

Try this:

>>> zip(*[[1,2], [3,4], [5,6]])
[(1, 3, 5), (2, 4, 6)]

请参阅解包参数列表：

当参数已经在列表或元组中时，会出现相反的情况，但需要为需要单独位置参数的函数调用解压缩。例如，内置的range（）函数需要单独的启动和停止参数。如果它们不能单独使用，请使用* -operator编写函数调用以将参数从列表或元组中解开：

The reverse situation occurs when the arguments are already in a list or tuple but need to be unpacked for a function call requiring separate positional arguments. For instance, the built-in range() function expects separate start and stop arguments. If they are not available separately, write the function call with the *-operator to unpack the arguments out of a list or tuple:

>>> range(3, 6)             # normal call with separate arguments
[3, 4, 5]
>>> args = [3, 6]
>>> range(*args)            # call with arguments unpacked from a list
[3, 4, 5]

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