將數組存儲爲文件:
import numpy as np
a = np.array([[1,2,3],[1,2]])
np.savetxt('xxx.txt',a)
報錯:
TypeError: Mismatch between array dtype ('object') and format specifier ('%.18e')
解決方法:
- 可以把 數組中每個元素個數變成一樣(長度相同)
- 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)
運行結果:
<class 'numpy.ndarray'>
[list([1, 2, 3]) list([1, 2])]