test_path.py 文件源码

def combinable_paths_no_loops(draw):
    """Makes varying-length paths, but no loops."""
    path_points = draw(lists(ipoints, min_size=2, max_size=200, unique_by=tuple))
    rand = draw(randoms())

    paths = [[]]
    length = rand.randint(2, 4)
    for pt in path_points:
        paths[-1].append(pt)
        length -= 1
        if length == 0:
            paths.append([])
            length = rand.randint(2, 4)
            joinable = (rand.random() > .5)
            if joinable:
                paths[-1].append(pt)

    if len(paths[-1]) < 2:
        paths.pop()

    rand.shuffle(paths)
    return [Path(p) for p in paths]