def splitext_(path):
    for ext in ['.tar.gz', '.tar.bz2','.nii.gz']:
        if path.endswith(ext):
            return path[:-len(ext)], path[-len(ext):]
    return os.path.splitext(path)
def splitext_(path):
    for ext in ['.tar.gz', '.tar.bz2', '.nii.gz']:
        if path.endswith(ext):
            return path[:-len(ext)], path[-len(ext):]
    return os.path.splitext(path)