function in jsngram.dir2 module
Description
Lists files in a directory recursively, excluding dot files and dot directories. Returns a list of paths relative to the argument path. Alwasy uses '/' as path delimiter, even on Windows.
Example
jsngram.dir2.list_files('/scratch') # ['a.txt', 'c/d.txt', 'c/e.txt']
Usage
jsngram.dir2.list_files(path, base=None)
Argument path is a target directory that will be scanned. Argument base is used to control the relative path inside, and should not be used by user.