将数组存储为文件：
import numpy
as np
a
= np
.array
([[1,2,3],[1,2]])
np
.savetxt
('xxx.txt',a
)
报错：
TypeError
: Mismatch between array dtype
('object') and format specifier
('%.18e')
解决方法：
可以把 数组中每个元素个数变成一样（长度相同）或者改用 pickle 代替 numpy.savetxt()
import numpy
as np
import pickle
a
= np
.array
([[1,2,3],[1,2]])
with open('uu.pk','wb') as file:
pickle
.dump
(a
,file)
with open('uu.pk', 'rb') as file_1
:
b
= pickle
.load
(file_1
)
print(type(b
))
print(b
)
运行结果：
<class 'numpy.ndarray'>
[list([1, 2, 3]) list([1, 2])]
