导入错误:ModuleNotFoundError:“block\u model”不是包

我正在尝试使用python open\u gl并创建一个创建对象类。Im获取错误ModuleNotFoundError:没有名为“block\u model”的模块。py';'block\u model不是一个包,我的代码给出了我无法修复的错误: `

class Create:
    def __init__(self, cube_x, cube_y, cube_z, file):
        glBegin(GL_LINES)
        model = importlib.import_module(file)
        model.verticies()
        model.edges()
        verticies = model.verticies
        edges = model.edges
        for edge in edges:
            for vertex in edge:
                glVertex3fv(verticies[vertex])
        glEnd()
    c1_x = 0
    c1_y = 0
    c1_z = 0
    print(camera)
cube1 = Create(c1_x, c1_y, c1_z, file="block_model.py")

` 这就是block\u模型。py看起来像:

verticies = (
    (1, -1, -1),
    (1, 1, -1),
    (-1, 1, -1),
    (-1, -1, -1),
    (1, -1, 1),
    (1, 1, 1),
    (-1, -1, 1),
    (-1, 1, 1)
)
edges = (
    (0, 1),
    (0, 3),
    (0, 4),
    (2, 1),
    (2, 3),
    (2, 7),
    (6, 3),
    (6, 4),
    (6, 7),
    (5, 1),
    (5, 4),
    (5, 7)
)


def verticies():
    # global verticies
    print("Returning verticies")

    return verticies


def edges():
    # global verticies
    print("Returning edges")

    return edges

谢谢:) **编辑:*我有一个新问题,它现在说:对于边中的边:TypeError:“function”对象不可iterable。有人对此有办法吗?