Python實用庫:PrettyTable 學習
阿新 • • 發佈:2018-12-09
PrettyTable安裝
使用pip即可十分方便的安裝PrettyTable,如下:
pip install PrettyTable
以下是具體的使用示例:
import prettytable as pt
按行新增資料
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 |
+-----------+------+------------+-----------------+
按列新增資料
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 |
+-----------+------+------------+-----------------+-------+
使用不同的輸出風格
tb.set_style(pt.MSWORD_FRIENDLY)
print('--- style:MSWORD_FRIENDLY -----')
print(tb)
tb.set_style(pt.PLAIN_COLUMNS)
print('--- style:PLAIN_COLUMNS -----')
print(tb)
隨機風格,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.[email protected]
@ Darwin 112 120900 1714.[email protected]
@ 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 |
+-----------+------+------------+-----------------+
不列印,獲取表格字串
s = tb.get_string()
print(s)
可以只獲取指定列或行
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 |
+-----------+------------+
自定義表格輸出樣式
設定左對齊
tb.align = 'l'
設定數字輸出格式
tb.float_format = "2.2"
設定邊框連線符為’*”
tb.junction_char = "*"
設定排序方式
tb.sortby = "City name"
設定左側不填充空白字元
tb.left_padding_width = 0
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 |
*----------*-----*-----------*----------------*
不顯示邊框
tb.border = 0
print(tb)
修改邊框分隔符
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也支援輸出HTML程式碼
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方法複製物件
tb.set_style(pt.DEFAULT)
tb.horizontal_char = '.'
tb2 = tb.copy()
tb.align = 'l'
tb2.align = 'r'
print(tb)
print(tb2)
直接賦值,得到的是索引
tb.horizontal_char = '-'
tb.aliign = 'l'
tb3 = tb
tb3.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 |
+-----------+------+------------+-----------------+