伴我写一个用python读取obj文件的代码

当然，我可以帮你伴你完成这个任务。下面是示例代码：

import numpy as np

def read_obj_file(filename):
    vertices = []
    faces = []
    normals = []

    with open(filename, 'r') as f:
        for line in f:
            if line.startswith('#'):
                continue
            values = line.split()
            if not values:
                continue
            if values[0] == 'v':
                vertices.append(list(map(float, values[1:4])))
            elif values[0] == 'vn':
                normals.append(list(map(float, values[1:4])))
            elif values[0] == 'f':
                face = []
                normal = []
                for v in values[1:]:
                    w = v.split('/')
                    face.append(int(w[0]))
                    normal.append(int(w[2]))
                faces.append(face)

    # Convert to numpy arrays
    vertices = np.array(vertices)
    faces = np.array(faces) - 1
    normals = np.array(normals)

    return vertices, faces, normals

这个函数可以读取一个obj文件，并返回其顶点、面和法向量的numpy数组。

希望能帮到你！