BS4中的迭代在web废料中失败

Question

我正在使用BeautifulSoup4从一个全种族灰狗会议（英国）中搜集数据。 http://www.gbgb.org.uk/resultsMeeting.aspx?id=135549 每场比赛通常有9到14场比赛会议。会议下面的代码遍历卡上的每个竞赛（事件），并将数据打印到屏幕（PyCharm Python v3）。问题是BS没有完成迭代，通常会在卡上的竞赛（事件）7或8左右失败，有时会在游戏进行到一半时崩溃只得到一半时间的数据跑步者。还有在某些情况下，我会收到一条标准消息“Process finished with exit code 0”（进程已完成，退出代码为0），我确实认为这可能与Url暂时不可用有关，但不寻常的是，该程序似乎总是在第7或8场比赛前后默认设置。我已经搜索了源代码代码的各个页面，可以看到没有不一致的代码（承认，我不是太熟悉的HTML）任何建议感谢。你知道吗

 from urllib import urlopen
 from bs4 import BeautifulSoup
 baseURL = 'http://www.gbgb.org.uk/resultsMeeting.aspx?id=135549'
 html = urlopen(baseURL)
 bsObj = BeautifulSoup(html, 'lxml')

 nameList = bsObj.findAll("div", {"class": "resultsBlockHeader"})
 for i in nameList:


     nameList1 = i.findAll("div", {"class": "track"})
     for j in nameList1:
         print(j.get_text())

     nameList1 = i.findAll("div", {"class": "date"})
     for j in nameList1:
         print(j.get_text())

     nameList1 = i.findAll("div", {"class": "datetime"})
     for j in nameList1:
         print(j.get_text())

     nameList1 = i.findAll("div", {"class": "grade"})
     for j in nameList1:
        print(j.get_text())

    nameList1 = i.findAll("div", {"class": "distance"})
    for j in nameList1:
        print(j.get_text())

    nameList1 = i.findAll("div", {"class": "prizes"})
    for j in nameList1:
        print(j.get_text())

nameList = bsObj.findAll("div", {"class": "resultsBlock"})
for i in nameList:

    nameList2 = i.findAll("li", {"class": "trap"})
    for j in nameList2:
        print(j.get_text())

    nameList2 = i.findAll("li", {"class": "first essential fin"})
    for j in nameList2:
        print(j.get_text())

    nameList2 = i.findAll("li", {"class": "essential greyhound"})
    for j in nameList2:
        print(j.get_text())

    nameList2 = i.findAll("li", {"class": "sp"})
    for j in nameList2:
        print(j.get_text())

    nameList2 = i.findAll("li", {"class": "timeSec"})
    for j in nameList2:
        print(j.get_text())

    nameList2 = i.findAll("li", {"class": "timeDistance"})
    for j in nameList2:
        print(j.get_text())