python二次开发CATIA：根据已知数据点创建曲线

已知数据点存于Coords.txt文件如下：

8.67155477658819,20.4471021292557,0
41.2016126836927,20.4471021292557,0
15.9568941320569,-2.93388599177698,0
42.2181532110364,-6.15301746150354,0
43.0652906622083,-26.4843096139083,0
-31.6617679595947,-131.151351928711,0
-14.6248416900635,-39.5306015014648,0
15.9568941320569,38.4064145682206,0
59.1609022344739,15.8725553152909,0
32.5608045782239,-13.7772545220504,0
-63.4640121459961,-80.4192123413086,0
55.9417860235364,-24.7900347115646,0
68.4794141973646,33.6624417899003,0
21.0357210363538,66.5608792899003,0
3.08042928830694,52.4688993094315,0
18.6677705969007,43.3198056815018,0
28.6076795782239,61.6390958426347,0
2.86299154416632,62.3962827322831,0
-36.9062805175781,39.9295196533203,0
3.98236274719238,41.822509765625,0

下面通过python读取数据点，创建曲线：

import win32com.client
import pywintypes  # 导入pywintypes模块
# 启动CATIA应用
catia = win32com.client.Dispatch('CATIA.Application')
catia.visible=1
try:
    # 打开文件
    f = open('Coords.txt')

    # 读取行内容，并去除换行符
    line = f.readline().replace('\n', '')
    coords = []

    # 循环读取,直到最后一行
    while line:
        print(line)

        # 用","分割每行
        values = line.split(',')

        # 将分割得到的坐标值（string类）转为float，并放在数组中
        coord = [float(values[0]),
                 float(values[1]),
                 float(values[2])]
        coords.append(coord)
        line = f.readline().replace('\n', '')

    part = catia.activedocument.part
    hsf = part.hybridshapefactory

    # 添加一个新几何图形集并重命名
    hb = part.hybridbodies.add()
    hb.name = 'bird'

    # 创建一根样条线
    curve = hsf.addnewspline()

    # 遍历点坐标序列
    for coord in coords:
        # 创建点，并更新
        pt = hsf.addnewpointcoord(coord[0],
                                  coord[1],
                                  coord[2])
        hb.appendhybridshape(pt)
        pt.compute()

        # 隐藏点
        hsf.gsmvisibility(pt, 0)

        # 将点添加为样条线的控制点
        curve.addpoint(pt)

    # 更新样条线
    hb.appendhybridshape(curve)
    curve.compute()
except pywintypes.com_error as e:
    # 如果出现错误，可能是因为没有活动文档
    print("无法获取活动文档，请确保CATIA应用程序中已有打开的文档。")
    print(e)