python Script for Grasshopper不接受其他文件

Question

我有以下python脚本，它导入.json文件并通过rhino / grasshopper绘制它们。当我链接文件路径时它似乎工作正常，直到我点击17个文件，一旦我尝试输入第18个及以后我得到以下消息“1.解决方案异常：list.index（项目）：项目不在列表中”

有人有什么想法吗？在编码等方面我真的迷失了...... 谢谢！

import json


if FilePath:


    # JSON file to read
    file = open(FilePath)

    # Load the data
    data = json.load(file)


    import pprint
    pp = pprint.PrettyPrinter(indent=4)

    a=[];
    b=[];

    L = list(data[0]['segments'])

y = len(L)

print y

pp.pprint(L)




for x in range (0,1):
    M = list(L[x]['activities'])
    q = len(M)
    print q
    for w in range (0, q):
        N = list(M[w]['trackPoints'])
        r = len(N)
        print r
        for final in range (0,r):
            c = N[final]['lat']
            d = N[final]['lon']

            a.append(c)
            b.append(d)

for x in range (2,2):
    M = list(L[x]['activities'])
    q = len(M)
    print q
    for w in range (0, q):
        N = list(M[w]['trackPoints'])
        r = len(N)
        print r
        for final in range (0,r):
            c = N[final]['lat']
            d = N[final]['lon']

            a.append(c)
            b.append(d)

for x in range (3,5):
    M = list(L[x]['activities'])
    q = len(M)
    print q
    for w in range (0, q):
        N = list(M[w]['trackPoints'])
        r = len(N)
        print r
        for final in range (0,r):
            c = N[final]['lat']
            d = N[final]['lon']

            a.append(c)
            b.append(d)

for x in range (6,7):
    M = list(L[x]['activities'])
    q = len(M)
    print q
    for w in range (0, q):
        N = list(M[w]['trackPoints'])
        r = len(N)
        print r
        for final in range (0,r):
            c = N[final]['lat']
            d = N[final]['lon']

            a.append(c)
            b.append(d)

    for x in range (8,11):
        M = list(L[x]['activities'])
        q = len(M)
        print q
        for w in range (0, q):
            N = list(M[w]['trackPoints'])
            r = len(N)
            print r
            for final in range (0,r):
                c = N[final]['lat']
                d = N[final]['lon']

                a.append(c)
                b.append(d)

    for x in range (12,12):
        M = list(L[x]['activities'])
        q = len(M)
        print q
        for w in range (0, q):
            N = list(M[w]['trackPoints'])
            r = len(N)
            print r
            for final in range (0,r):
                c = N[final]['lat']
                d = N[final]['lon']

                a.append(c)
                b.append(d)