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Python实用库PrettyTable的用法

发表于：2024-10-18 作者：千家信息网编辑

千家信息网最后更新 2024年10月18日，这篇文章主要介绍"Python实用库PrettyTable的用法"，在日常操作中，相信很多人在Python实用库PrettyTable的用法问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法

千家信息网最后更新 2024年10月18日Python实用库PrettyTable的用法

这篇文章主要介绍"Python实用库PrettyTable的用法"，在日常操作中，相信很多人在Python实用库PrettyTable的用法问题上存在疑惑，小编查阅了各式资料，整理出简单好用的操作方法，希望对大家解答"Python实用库PrettyTable的用法"的疑惑有所帮助！接下来，请跟着小编一起来学习吧！

PrettyTable安装

使用pip即可十分方便的安装PrettyTable，如下：

pip install PrettyTable

PrettyTable使用示例

github上有PrettyTable的使用说明，链接如下：https://github.com/dprince/python-prettytable

以下是具体的使用示例：

import prettytable as pt

按行添加数据

tb = pt.PrettyTable()tb.field_names = ["City name", "Area", "Population", "Annual Rainfall"]tb.add_row(["Adelaide",1295, 1158259, 600.5])tb.add_row(["Brisbane",5905, 1857594, 1146.4])tb.add_row(["Darwin", 112, 120900, 1714.7])tb.add_row(["Hobart", 1357, 205556,619.5])print(tb)

+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide | 1295 | 1158259 | 600.5 |
| Brisbane | 5905 | 1857594 | 1146.4 |
| Darwin | 112 | 120900 | 1714.7 |
| Hobart | 1357 | 205556 | 619.5 |
+-----------+------+------------+-----------------+

按列添加数据

tb.add_column('index',[1,2,3,4])print(tb)

+-----------+------+------------+-----------------+-------+
| City name | Area | Population | Annual Rainfall | index |
+-----------+------+------------+-----------------+-------+
| Adelaide | 1295 | 1158259 | 600.5 | 1 |
| Brisbane | 5905 | 1857594 | 1146.4 | 2 |
| Darwin | 112 | 120900 | 1714.7 | 3 |
| Hobart | 1357 | 205556 | 619.5 | 4 |
+-----------+------+------------+-----------------+-------+

使用不同的输出风格

tb.set_style(pt.MSWORD_FRIENDLY)print('--- style：MSWORD_FRIENDLY -----')print(tb)tb.set_style(pt.PLAIN_COLUMNS)print('--- style：PLAIN_COLUMNS -----')print(tb)

随机风格，每次不同

tb.set_style(pt.RANDOM)print('--- style：MSWORD_FRIENDLY -----')print(tb)tb.set_style(pt.DEFAULT)print('--- style：DEFAULT -----')print(tb)

--- style：MSWORD_FRIENDLY -----
| City name | Area | Population | Annual Rainfall |
| Adelaide | 1295 | 1158259 | 600.5 |
| Brisbane | 5905 | 1857594 | 1146.4 |
| Darwin | 112 | 120900 | 1714.7 |
| Hobart | 1357 | 205556 | 619.5 |
--- style：PLAIN_COLUMNS -----
City name Area Population Annual Rainfall
Adelaide 1295 1158259 600.5
Brisbane 5905 1857594 1146.4
Darwin 112 120900 1714.7
Hobart 1357 205556 619.5
--- style：MSWORD_FRIENDLY -----
@ Adelaide 1295 1158259 600.5 @
@ Brisbane 5905 1857594 1146.4@
@ Darwin 112 120900 1714.7@
@ Hobart 1357 205556 619.5 @
--- style：DEFAULT -----
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide | 1295 | 1158259 | 600.5 |
| Brisbane | 5905 | 1857594 | 1146.4 |
| Darwin | 112 | 120900 | 1714.7 |
| Hobart | 1357 | 205556 | 619.5 |
+-----------+------+------------+-----------------+

不打印，获取表格字符串

s = tb.get_string()print(s)

可以只获取指定列或行

s = tb.get_string(fields=["City name", "Population"],start=1,end=4)print(s)

+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide | 1295 | 1158259 | 600.5 |
| Brisbane | 5905 | 1857594 | 1146.4 |
| Darwin | 112 | 120900 | 1714.7 |
| Hobart | 1357 | 205556 | 619.5 |
+-----------+------+------------+-----------------+
+-----------+------------+
| City name | Population |
+-----------+------------+
| Brisbane | 1857594 |
| Darwin | 120900 |
| Hobart | 205556 |
+-----------+------------+

自定义表格输出样式

设定左对齐

tb.align = 'l'

设定数字输出格式

tb.float_format = "2.2"

设定边框连接符为'*"

tb.junction_char = "*"

设定排序方式

tb.sortby = "City name"

设定左侧不填充空白字符

tb.left_padding_width = 0print(tb)

*----------*-----*-----------*----------------*
|City name |Area |Population |Annual Rainfall |
*----------*-----*-----------*----------------*
|Adelaide |1295 |1158259 |600.50 |
|Brisbane |5905 |1857594 |1146.40 |
|Darwin |112 |120900 |1714.70 |
|Hobart |1357 |205556 |619.50 |
*----------*-----*-----------*----------------*

不显示边框

tb.border = 0print(tb)

修改边框分隔符

tb.set_style(pt.DEFAULT)tb.horizontal_char = '+'print(tb)

City name Area Population Annual Rainfall
Adelaide 1295 1158259 600.50
Brisbane 5905 1857594 1146.40
Darwin 112 120900 1714.70
Hobart 1357 205556 619.50
+++++++++++++++++++++++++++++++++++++++++++++++++++
| City name | Area | Population | Annual Rainfall |
+++++++++++++++++++++++++++++++++++++++++++++++++++
| Adelaide | 1295 | 1158259 | 600.50 |
| Brisbane | 5905 | 1857594 | 1146.40 |
| Darwin | 112 | 120900 | 1714.70 |
| Hobart | 1357 | 205556 | 619.50 |
+++++++++++++++++++++++++++++++++++++++++++++++++++

prettytable也支持输出HTML代码

s = tb.get_html_string()print(s)

City name	Area	Population	Annual Rainfall
Adelaide	1295	1158259	600.50
Brisbane	5905	1857594	1146.40
Darwin	112	120900	1714.70
Hobart	1357	205556	619.50

使用copy方法复制对象

tb.set_style(pt.DEFAULT)tb.horizontal_char = '.'tb2 = tb.copy()tb.align = 'l'tb2.align = 'r'print(tb)print(tb2)

直接赋值，得到的是索引

tb.horizontal_char = '-'tb.aliign = 'l'tb3 = tbtb3.align = 'r'print(tb)print(tb3)

+...........+......+............+.................+
| City name | Area | Population | Annual Rainfall |
+...........+......+............+.................+
| Adelaide | 1295 | 1158259 | 600.50 |
| Brisbane | 5905 | 1857594 | 1146.40 |
| Darwin | 112 | 120900 | 1714.70 |
| Hobart | 1357 | 205556 | 619.50 |
+...........+......+............+.................+
+...........+......+............+.................+
| City name | Area | Population | Annual Rainfall |
+...........+......+............+.................+
| Adelaide | 1295 | 1158259 | 600.50 |
| Brisbane | 5905 | 1857594 | 1146.40 |
| Darwin | 112 | 120900 | 1714.70 |
| Hobart | 1357 | 205556 | 619.50 |
+...........+......+............+.................+
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide | 1295 | 1158259 | 600.50 |
| Brisbane | 5905 | 1857594 | 1146.40 |
| Darwin | 112 | 120900 | 1714.70 |
| Hobart | 1357 | 205556 | 619.50 |
+-----------+------+------------+-----------------+
+-----------+------+------------+-----------------+
| City name | Area | Population | Annual Rainfall |
+-----------+------+------------+-----------------+
| Adelaide | 1295 | 1158259 | 600.50 |
| Brisbane | 5905 | 1857594 | 1146.40 |
| Darwin | 112 | 120900 | 1714.70 |
| Hobart | 1357 | 205556 | 619.50 |
+-----------+------+------------+-----------------+
---------------------