Hi, my question is what “pickle” and “cloudpickle” mean？I am not a Python expert

Hey Zheng, i’m gonna have to compress these images to keep the main channel is cleaner. Pickle makes a python object into binary representation. It compresses the object and it’s part of the Python installation. Cloudpickle is a more robust version (and often used instead of the native pickle). If you use something like Dask also, cloudpickle is used to package the function/data to send it across the cluster.