python - 以表格形式打印字典列表

Question

假设我将此列表作为全局列表

 dataset =[{'Major': 'Biology', 'GPA': '2.4', 'Name': 'Edward'},
           {'Major': 'Physics', 'GPA': '2.9', 'Name':'Emily'},  
           {'Major':'Mathematics', 'GPA': '3.5', 'Name': 'Sarah'}]

并且想要一个函数 print() 将其打印为

 name     major        GPA 
 =============================== 
 edward   Biology      2.4 
 Emily    physics      2.9 
 sarah    mathematics  3.5

Answer 1

您可以使用模块 tabulate .
以下代码与 python 2 兼容，python 3 见注释。

>>> import tabulate
>>> dataset =[{'Major': 'Biology', 'GPA': '2.4', 'Name': 'Edward'}, {'Major': 'Physics', 'GPA': '2.9', 'Name': 'Emily'}, {'Major': 'Mathematics', 'GPA': '3.5', 'Name': 'Sarah'}]
>>> header = dataset[0].keys()
>>> rows =  [x.values() for x in dataset]
>>> print tabulate.tabulate(rows, header)
Major          GPA  Name
-----------  -----  ------
Biology        2.4  Edward
Physics        2.9  Emily
Mathematics    3.5  Sarah

您可以使用 tablefmt不同表格格式的参数

>>> print tabulate.tabulate(rows, header, tablefmt='grid')
+-------------+-------+--------+
| Major       |   GPA | Name   |
+=============+=======+========+
| Biology     |   2.4 | Edward |
+-------------+-------+--------+
| Physics     |   2.9 | Emily  |
+-------------+-------+--------+
| Mathematics |   3.5 | Sarah  |
+-------------+-------+--------+
>>> print tabulate.tabulate(rows, header, tablefmt='rst')
===========  =====  ======
Major          GPA  Name
===========  =====  ======
Biology        2.4  Edward
Physics        2.9  Emily
Mathematics    3.5  Sarah
===========  =====  ======