如何将Pandas dataframe保存到npz文件中？

Question

I have some dataframes which are loaded from different npz files. I combine all the data into a single dataframe and apply some processing to it. Now I want to save the new combined dataframe into a new npz file. How do I do that?

Since the dataframe is large (5000 rows, 30 columns) I would also like to know the most efficient way of doing so.

I tried to look over the inte.net for the solution but the results are about how to convert pandas dataframe to numpy data.

Answer 1

It seems that the best solution for your problem is to convert your dataframe to a numpy array and afterwards save it.

np.savez(file, df.to_numpy())

file has to be a file, in which you want to save your data and df is the dataframe in which you have your data.