Numpy.save list of different sized arrays gives: TypeError: '_io.TextIOWrapper' object is not subscriptable

Question

这是我的代码：

import numpy as np

mylist = [np.arange(0,1, 0.5), np.arange(0,2,0.5)]

np.save('mylist', mylist)

with open('mylist.npy') as last:
    print(lst[0])

我遇到了错误

    TypeError                                 Traceback (most recent call last)
<ipython-input-7-2461c8fce207> in <module>
      6 
      7 with open('mylist.npy') as lst:
--->  8     print(lst[0])

TypeError: '_io.TextIOWrapper' object is not subscriptable

我已经尝试根据其他类似的帖子修改代码，例如包含 lst = lst.read() 或 lst = lst.readlines()，但这给了我一个 Unicode 错误：

UnicodeDecodeError: 'utf-8' codec can't decode byte 0x93 in position 0: invalid start byte

有人有什么建议吗？谢谢！

Answer 1

正如 hpaulj 评论的那样，解决方案是使用 np.load 而不是 read 或 readlines。

import numpy as np

mylist = [np.arange(0,1, 0.5), np.arange(0,2,0.5)]

np.save('mylist', mylist)

with open('mylist.npy') as last:
    lst = np.load(lst, allow_pickle = True)
    print(lst[0])

Numpy.save list of different sized arrays gives: TypeError: '_io.TextIOWrapper' object is not subscriptable

Numpy.save list of different sized arrays gives: TypeError: '_io.TextIOWrapper' object is not subscriptable

numpy

readlines

python-unicode

numpy-ndarray