helpers.py 文件源码

def path_advance(thepath, sep=os.sep):
    '''generator to iterate over a file path forwards

    :param str thepath: the path to navigate forwards
    :param str sep: *Default: os.sep* - the path separator to use

    :returns: (iter)able of strings

    '''
    # handle a direct path
    pre = ''
    if thepath[0] == sep:
        pre = sep
    curpath = ''
    parts = thepath.split(sep)
    if pre:
        if parts[0]:
            parts[0] = pre + parts[0]
        else:
            parts[1] = pre + parts[1]
    for part in parts:
        curpath = os.path.join(curpath, part)
        if curpath:
            yield curpath