在 python 中保存和加载混合数据的最佳方法是什么？

Question

I have mixture data in python, which consist of

1. some list of dictionary and
2. some numpy array.

I can save first part as json, and second part as binary npz. But which format should i prefer for save both of them in one file?

Answer 1

Do you need the saved data to be human-readable? If not, you can try Pickle https://docs.python.org/3/library/pickle.html

For examples please see the related question: How can I use pickle to save a dict?

(Example code from @Blender in above link)

import pickle

a = {'hello': 'world'}

with open('filename.pickle', 'wb') as handle:
    pickle.dump(a, handle, protocol=pickle.HIGHEST_PROTOCOL)

with open('filename.pickle', 'rb') as handle:
    b = pickle.load(handle)

print a == b