在python数据框中随机迭代

Question

我有一个名为'lattice'的数据框，其属性为'level'

g_lattice=lattice.groupby('level')

如何根据级别随机遍历g_lattice中的组。

Answer 1

In [22]: df = pd.DataFrame({'A': ['foo', 'bar'] * 3,
                            'B': rand.randn(6),
                            'C': rand.randint(0, 20, 6)})

In [23]: groups = list(df.groupby('A'))

In [24]: random.shuffle(groups)

In [25]: for g, grp in groups:
    print grp
   ....:     
     A         B   C
0  foo  0.900856   4
2  foo -0.122890  19
4  foo -0.267888   8
     A         B  C
1  bar -0.683728  5
3  bar -0.935769  6
5  bar  0.530355  0