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Tag: serialization

Nested Serializer save post foreign key in django

In my project, the relationship between Product and Group is ManytoOne. When I tried to post a new product, it cannot work. I’m sure there are more issues with this code and I will appreciate a detailed answer, because I am new to Django and Python. Thank you in advance. models.py serializers.py views.py Answer First change serializers.py: Then change views.py:

Saving and Loading a Vowpal Wabbit model in python with –safe_resume –cb_explore

I would like to do online training with a contextual Vowpal Wabbit model, so I need to save and reload frequently. However, whenever I try to reload a model (which was initialized with –save_resume), I get an exception with: Example Code to reproduce: Python 3.8.5 vowpalwabbit==8.10.1 If I don’t use –save_resume, load and save work, however the model performance is

Pydantic enum field does not get converted to string

I am trying to restrict one field in a class to an enum. However, when I try to get a dictionary out of class, it doesn’t get converted to string. Instead it retains the enum. I checked pydantic documentation, but couldn’t find anything relevant to my problem. This code is representative of what I actually need. I’m trying to get

What is the advantage of saving `.npz` files instead of `.npy` in python, regarding speed, memory and look-up?

The python documentation for the numpy.savez which saves an .npz file is: The .npz file format is a zipped archive of files named after the variables they contain. The archive is not compressed and each file in the archive contains one variable in .npy format. […] When opening the saved .npz file with load a NpzFile object is returned. This

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