如何在Python的分隔行中打印列表元素(也是列表) [英] How to print list elements (which are also lists) in separated lines in Python

问题描述

我已经检查了SO帖子上的帖子和答案 在Python中的分隔行上打印列表元素 ，而我认为我的问题是另外一个问题.

I've checked the post and answers on the SO post Printing list elements on separated lines in Python, while I think my problem is a different one.

我想要的是变换:

lsts = [[1], [1, 1], [1, 2, 1], [1, 3, 3, 1], [1, 4, 6, 4, 1]]

进入如下所示的输出:

[[1],
[1, 1],
[1, 2, 1],
[1, 3, 3, 1],
[1, 4, 6, 4, 1]]

我尝试追加，在for循环中打印 和"\ n" .join()，但都失败了.

I tried append, print in the for loop and "\n".join() but all failed.

推荐答案

要完全实现所需的效果，可以像已经建议的那样手动展开并打印外部数组:

To achieven exactly what you want, you could manually unroll and print the outer array like already suggested:

>>> lsts = [[1], [2,3], [4, 5, 6]]
>>> print("[" + ",\n".join(str(i) for i in lsts) + "]")
[[1],
[2, 3],
[4, 5, 6]]

并非完全符合您的要求，但 json.dumps 可以通过指定indent做一些漂亮的打印:

Not exactly what you requested, but json.dumps can do some pretty-printing by specifying an indent:

>>> print(json.dumps(lsts, indent=4))
[
    [
        1
    ],
    [
        2,
        3
    ],
    [
        4,
        5,
        6
    ]
]

然后有 pprint ，用于人类的智能打印:

And then there's pprint, which is intended for somewhat intelligent printing for humans:

>>> pprint(lsts, width=20)
[[1],
 [2, 3],
 [4, 5, 6]]

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