tf.io.gfile.walk( top, topdown=True, onerror=None )
Recursive directory tree generator for directories.
top: string, a Directory name
topdown: bool, Traverse pre order if True, post order if False.
onerror: optional handler for errors. Should be a function, it will be called with the error as argument. Rethrowing the error aborts the walk.
Errors that happen while listing directories are ignored.
Each yield is a 3-tuple: the pathname of a directory, followed by lists of all its subdirectories and leaf files. (dirname, [subdirname, subdirname, ...], [filename, filename, ...]) as strings