listdir VS walk

listdir_flavour1.py

def listLocation(root_location,files = [],folders = []):
    """ A recursive function to get directory content into arrays
        Usage : x,y = listLocation(directory/path)
        Returns 2 arrays 1 files array and 1 folders array """
    for eachitem in os.listdir(root_location):
        filePath = os.path.join(root_location,eachitem)
        if os.path.isdir(filePath) and not eachitem.startswith('.'):
          folders.append(filePath)
          listLocation(filePath,files,folders)
        elif os.path.isfile(filePath) and not eachitem.startswith('.'):
          files.append(filePath)
        elif os.path.islink(filePath):
          pass
    return files, folders

walk_flavor1.py

def walklevel(some_dir, level=1):
    some_dir = some_dir.rstrip(path.sep)
    # assert path.isdir(some_dir)
    num_sep = some_dir.count(path.sep)
    for root, dirs, files in walk(some_dir):
        yield root, dirs, files
        num_sep_this = root.count(path.sep)
        if num_sep + level <= num_sep_this:
            del dirs[:]

def getFolders(location=None, subfolders=1):
    return [i[0] for i in walklevel(location, subfolders)]

def getFiles(location=None, subfolders=2):
    files = [i for i in walklevel(location, subfolders) if i[2] != []]
    tmp = []
    for x in files:
        for afile in x[2]:
            tmp.append(path.join(x[0], afile))
    return tmp