python展平数组数组 [英] python flatten an array of array
本文介绍了python展平数组数组的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我有一个数组数组,类似这样:
I have an array of array, something like that:
array([[array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype=int64)],
[array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype=int64)],
[array([46842, 26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285,
17616, 25146, 32645, 41276], dtype=int64)],
...,
[array([24534, 8230, 14267, 9352, 3543, 29397, 900, 32398, 34262,
37646, 11930, 37173], dtype=int64)],
[array([25157], dtype=int64)],
[array([ 8859, 20850, 19322, 8075], dtype=int64)]], dtype=object)
我想要的是
array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668,33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665,46842, 26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285,17616, 25146, 32645, 41276
...,
24534, 8230, 14267, 9352, 3543, 29397, 900, 32398, 34262,
37646, 11930, 37173,25157 8859, 20850, 19322, 8075, dtype=object)
我已经搜索了一些解决方案,但似乎所有这些都用于np.array或list,
I have searched some solution for that, but seems that all of them are for np.array or list, which are not work for array.
functools.reduce(operator.iconcat, orders2.values.tolist(), [])
[array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype=int64),
array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype=int64),
array([46842, 26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285,
17616, 25146, 32645, 41276], dtype=int64),...
orders2.values.flatten()
array([array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype=int64),
array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype=int64),
我什至无法将数组转换为列表
I couldnt even convert the array to list
[sub.tolist() for sub in orders2.values]
[array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype=int64),
array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype=int64),
array([46842, 26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285,
17616, 25146, 32645, 41276], dtype=int64),...
orders2.values.flatten()
array([array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype=int64),
array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype=int64),...
我发现很难获得有关数组类的任何信息,所有内容都是列表或np.array
I find it is hard to get some information about array class ,everything is list or np.array
推荐答案
使用列表理解,然后转换回 array
:
Use a list comprehension, then convert back to array
:
>>> arr = array([[array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668],
dtype='int64')],
[array([33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665],
dtype='int64')],
[array([46842, 26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285,
17616, 25146, 32645, 41276], dtype='int64')],
[array([24534, 8230, 14267, 9352, 3543, 29397, 900, 32398, 34262,
37646, 11930, 37173], dtype='int64')],
[array([25157], dtype='int64')],
[array([ 8859, 20850, 19322, 8075], dtype='int64')]], dtype=object)
>>> array([x for i in arr.tolist() for x in i[0].tolist()])
array([33120, 28985, 9327, 45918, 30035, 17794, 40141, 1819, 43668,
33754, 24838, 17704, 21903, 17668, 46667, 17461, 32665, 46842,
26434, 39758, 27761, 10054, 21351, 22598, 34862, 40285, 17616,
25146, 32645, 41276, 24534, 8230, 14267, 9352, 3543, 29397,
900, 32398, 34262, 37646, 11930, 37173, 25157, 8859, 20850,
19322, 8075])
>>>
这篇关于python展平数组数组的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文