在python单表单元格中添加多行答案

【问题标题】：Add multiple line in python single table cell在python单表单元格中添加多行
【发布时间】：2014-04-28 22:32:05
【问题描述】：

我不知道如何绘制如下表格，我尝试使用漂亮的表格但无法在一个单元格中放置多行。

注意：行数应该根据字符串的个数，所以我想每行放一些n个字符串。

有人可以帮忙吗？

+---- +-------------------+-------------------------------------------------------+
| Id  | Name              | Comment                                               |
+-----+-------------------+-------------------------------------------------------+
| 1   |  Alvina Skiles    | Dolor qui rerum est sed. Sed ipsa repudiandae et      |
|     |                   | Non explicabo voluptas impedit rerum dignissimos.     |
|     |                   | Minima voluptatibus sint voluptates similique.'       |
+-----+-------------------+-------------------------------------------------------+
| 2   |  Chasity Lakin    | Nesciunt ea voluptatem rerum eos rerum ut soluta      |
|     |                   | Animi totam rerum fugiat consectetur odio et          |
|     |                   | repellendus                                           |
+-----+-------------------+-------------------------------------------------------+
| 3   | Miss Brennan Kiehn| Nulla placeat saepe voluptatem molestias dolores ex   |
|     |                   | Reiciendis nostrum adipisci qui enim explicabo.       |
+-----+-------------------+-------------------------------------------------------+

这是我构建表格的数据结构：

[
    {
        "id": "1",
        "name": "Alvina Skiles",
        "comment": 'Dolor qui rerum est sed. Sed ipsa repudiandae et. Non explicabo voluptas impedit rerum dignissimos. Minima voluptatibus
    },
    {
        "id": "2",
        "name" : 'Chasity Lakin',
        "comment": 'Nesciunt ea voluptatem rerum eos rerum ut soluta. Animi totam rerum fugiat consectetur odio et repellendus.',
    },
    {
        "id": "3",
        "name" : 'Miss Brennan Kiehn',
        "comment": 'Nulla placeat saepe voluptatem molestias dolores ex. Reiciendis nostrum adipisci qui enim explicabo.
    },
]

【问题讨论】：

这个标签后面的数据是如何表示的？
它是一个带有键 'id'、'name'、'likes' 的字典，当行长时，我想根据行中字符串的数量将其拆分为多行。
请更新问题，对要显示为表格的数据进行完整描述。生成示例表的数据示例将非常好。
数据示例与示例表不匹配。将评论分成几行的标准是什么？
我想根据行上的字符串数进行拆分，就像我想拆分的 10 个字符串一样。

标签： python prettytable

【解决方案1】：

我今天只需要同样的东西，并查看我创建的不同解决方案：

from prettytable import PrettyTable
from textwrap import fill

header = ["Id", "Name", "Comment"]
table = PrettyTable(field_names=header, align='l')

items = [
    {
        "id": "1",
        "name": "Alvina Skiles",
        "comment": 'Dolor qui rerum est sed. Sed ipsa repudiandae et. Non explicabo voluptas impedit rerum dignissimos. Minima voluptatibus'
    },
    {
        "id": "2",
        "name" : 'Chasity Lakin',
        "comment": 'Nesciunt ea voluptatem rerum eos rerum ut soluta. Animi totam rerum fugiat consectetur odio et repellendus.'
    },
    {
        "id": "3",
        "name" : 'Miss Brennan Kiehn',
        "comment": 'Nulla placeat saepe voluptatem molestias dolores ex. Reiciendis nostrum adipisci qui enim explicabo.'
    },
]


for item in items:
    table.add_row([item["id"], item["name"], fill(item["comment"], width=50)])
    # you can change the width="number" to as many character you want per line.

print(table)

所以结果是这样的：

+----+--------------------+---------------------------------------------------+
| Id | Name               | Comment                                           |
+----+--------------------+---------------------------------------------------+
| 1  | Alvina Skiles      | Dolor qui rerum est sed. Sed ipsa repudiandae et. |
|    |                    | Non explicabo voluptas impedit rerum dignissimos. |
|    |                    | Minima voluptatibus                               |
| 2  | Chasity Lakin      | Nesciunt ea voluptatem rerum eos rerum ut soluta. |
|    |                    | Animi totam rerum fugiat consectetur odio et      |
|    |                    | repellendus.                                      |
| 3  | Miss Brennan Kiehn | Nulla placeat saepe voluptatem molestias dolores  |
|    |                    | ex. Reiciendis nostrum adipisci qui enim          |
|    |                    | explicabo.                                        |
+----+--------------------+---------------------------------------------------+

就是这样，只需使用 textwrap（Python 内置）和 PrettyTable

【讨论】：

使用 prettyTable.add_row([item[row], width = 50]) 我得到一个语法错误。
你好@aJazz，实际上参数“width=50”不是'add_row'方法，而是一个textwrap.fill参数。看一下代码，特别注意括号。我确实在我身边再次运行了漏洞代码，它仍然运行良好。

【解决方案2】：

看起来 prettytable 可以很好地处理换行符，所以快速格式化函数可能就可以解决问题。这是我的示例：

import prettytable
from prettytable import ALL as ALL
items_table = prettytable.PrettyTable(hrules=ALL)
items_table.field_names = ["id", "name", "comment"]

items = [
    {
        "id": "1",
        "name": "Alvina Skiles",
        "comment": 'Dolor qui rerum est sed. Sed ipsa repudiandae et. Non explicabo voluptas impedit rerum dignissimos. Minima voluptatibus'
    },
    {
        "id": "2",
        "name" : 'Chasity Lakin',
        "comment": 'Nesciunt ea voluptatem rerum eos rerum ut soluta. Animi totam rerum fugiat consectetur odio et repellendus.'
    },
    {
        "id": "3",
        "name" : 'Miss Brennan Kiehn',
        "comment": 'Nulla placeat saepe voluptatem molestias dolores ex. Reiciendis nostrum adipisci qui enim explicabo.'
    },
]

def format_comment(comment, max_line_length):
    #accumulated line length
    ACC_length = 0
    words = comment.split(" ")
    formatted_comment = ""
    for word in words:
        #if ACC_length + len(word) and a space is <= max_line_length 
        if ACC_length + (len(word) + 1) <= max_line_length:
            #append the word and a space
            formatted_comment = formatted_comment + word + " "
            #length = length + length of word + length of space
            ACC_length = ACC_length + len(word) + 1
        else:
            #append a line break, then the word and a space
            formatted_comment = formatted_comment + "\n" + word + " "
            #reset counter of length to the length of a word and a space
            ACC_length = len(word) + 1
    return formatted_comment

for item in items:
    item["comment"] = format_comment(item["comment"], 42)
    items_table.add_row([item["id"], item["name"], item["comment"]])

print(items_table)

这是输出：

+----+--------------------+--------------------------------------------+
| id |        name        |                  comment                   |
+----+--------------------+--------------------------------------------+
| 1  |   Alvina Skiles    |     Dolor qui rerum est sed. Sed ipsa      |
|    |                    |  repudiandae et. Non explicabo voluptas    |
|    |                    |     impedit rerum dignissimos. Minima      |
|    |                    |               voluptatibus                 |
+----+--------------------+--------------------------------------------+
| 2  |   Chasity Lakin    | Nesciunt ea voluptatem rerum eos rerum ut  |
|    |                    |     soluta. Animi totam rerum fugiat       |
|    |                    |     consectetur odio et repellendus.       |
+----+--------------------+--------------------------------------------+
| 3  | Miss Brennan Kiehn | Nulla placeat saepe voluptatem molestias   |
|    |                    |  dolores ex. Reiciendis nostrum adipisci   |
|    |                    |            qui enim explicabo.             |
+----+--------------------+--------------------------------------------+

【讨论】：