pickle file
pickle
module
pandas IO tools
https://pandas.pydata.org/pandas-docs/version/0.25/user_guide/io.html#pickling
numpy
python - Save Numpy Array using Pickle - Stack Overflow
https://stackoverflow.com/questions/52444921/save-numpy-array-using-pickle
Use "numpy.save" and "numpy.load"
numpy io
joblib.dump joblib.load