A function that enumerates all files in a folder (and subfolders) $pip install enumerate-all-files-in-folder Original from enumerate_all_files_in_folder import copy_enumerate_files alli = copy_enumerate_files( folders=[r"F:\flattest"], outputfolder=r"F:\flattestresult1", maxsubdirs=0, groupsuffix=True, restart_index_new_suffix=True, zfill=8, prefix = '1test_' ) alli = copy_enumerate_files( folders=[r"F:\flattest"], outputfolder=r"F:\flattestresult2", maxsubdirs=0, groupsuffix=False, restart_index_new_suffix=False, zfill=8, prefix='2test_' ) alli = copy_enumerate_files( folders=[r"F:\flattest"], outputfolder=r"F:\flattestresult3", maxsubdirs=0, groupsuffix=True, restart_index_new_suffix=False, zfill=8, prefix='3test_' )