SIice 基于间隔的 numpy 数组?

SIice a numpy array based on an interval?

是否可以在numpy中将长度为m的一维数组按间隔n系统地切片?假设我有一个包含 1000 个值的列表,我可以轻松地将其分成 10 个包含 100 个值的列表吗?

您可以同时使用 np.array_split()np.split(),它们实际上是相同的,但需要注意一点(根据 np.array_split()

来自文档:

x = np.arange(8.0)

np.array_split(x, 3)

#Result
[array([0.,  1.,  2.]), array([3.,  4.,  5.]), array([6.,  7.])]

Split an array into multiple sub-arrays.

Please refer to the split documentation. The only difference between these functions is that array_split allows indices_or_sections to be an integer that does not equally divide the axis. For an array of length l that should be split into n sections, it returns l % n sub-arrays of size l//n + 1 and the rest of size l//n.

array_split 也允许不等间距拆分,如果这能满足您的需求

ar = np.arange(0, 20, dtype='int')

s = [2, 7, 12, 17]

np.array_split(ar, s)
Out[80]: 
[array([0, 1]),
 array([2, 3, 4, 5, 6]),
 array([ 7,  8,  9, 10, 11]),
 array([12, 13, 14, 15, 16]),
 array([17, 18, 19])]