I am using pyradiomics and I need to create a python loop that walks a root folder in my local machine and extracts a feature column from each unique patient .Each row should contain one unique ID and...

I am using pyradiomics and I need to create a python loop that walks a root folder in my local machine and extracts a feature column from each unique patient .Each row should contain one unique ID and all of that patients features. Most of the files in the folder are gz files. Note: The folder also contains subfolders . Please be detailed as I want to learn !!.