Question

我在最近几天发了几篇帖子，所以感谢你们的帮助到目前为止，所有这些都非常适合帮助初学者。

抬头，我知道下面的代码看起来非常基本，并且可能有一种更简单，更优雅的方式来实现我正在尝试的东西，但是现在这是我可以学习并且实际上在某种程度上理解的基础哈哈

只是想知道是否有人能够真正告诉我错误是由什么引起的，在程序输出上，它似乎有时运行正常并且失败，这个错误可能是2个中的3个。

这仍然是一个正在进行的项目，主要目的是创建一个程序，我可以自动完成我作为学习环境手动完成的任务。

感谢任何洞察。

节目输出

Beginning Mining
Opener Created
Opener Headers Added
Url Assigned
HTTP Error 503: Service Temporarily Unavailable
1
Opener Created
Opener Headers Added
Url Assigned
Page Open and Read
90378
 soup assigned to rawdata
 filtered for torType Class
 reassigned to soup to tordata
Links Filtered
Printing Recent Torrents from Filter WebData function
['/the-big-bang-theory-s07e08-hdtv-x264-lol-ettv-t8180359.html', '/the-walking-dead-s04e05-hdtv-x264-2hd-ettv-t8158163.html', '/the-vampire-diaries-s05e07-proper-hdtv-x264-2hd-ettv-t8180537.html', '/the-big-bang-theory-7x7-hdtv-lol-t8141134.html', '/how-i-met-your-mother-s09e09-hdtv-x264-2hd-eztv-t8164029.html', '/sons-of-anarchy-s06e10-hdtv-x264-asap-ettv-t8170162.html', '/american-horror-story-s03e06-hdtv-x264-killers-ettv-t8175485.html', '/sleepy-hollow-s01e07-hdtv-x264-lol-eztv-t8164318.html', '/elementary-2x8-hdtv-lol-t8180367.html', '/the-originals-s01e07-hdtv-x264-lol-ettv-t8169688.html', '/the-blacklist-s01e07-hdtv-x264-lol-eztv-t8124923.html', '/modern-family-s05e07-hdtv-x264-2hd-eztv-t8175344.html', '/arrow-s02e06-proper-hdtv-x264-2hd-eztv-t8179975.html', '/white-collar-s05e05-hdtv-x264-2hd-eztv-t8180828.html', '/homeland-s03e07-720p-hdtv-x264-killers-eztv-t8158378.html', '/greys-anatomy-s10e09-hdtv-x264-lol-ettv-t8180608.html', '/how-i-met-your-mother-s09e08-hdtv-x264-2hd-eztv-t8124354.html', '/arrow-s02e05-hdtv-x264-lol-ettv-t8135416.html', '/boardwalk-empire-s04e10-hdtv-x264-2hd-eztv-t8158693.html', '/the-simpsons-s25e04-hdtv-x264-lol-eztv-t8157997.html', '/modern-family-s05e06-hdtv-x264-asap-eztv-t8061643.html', '/new-girl-s03e07-hdtv-x264-lol-eztv-t8130237.html', '/the-tomorrow-people-us-s01e06-hdtv-x264-lol-eztv-t8174964.html', '/the-walking-dead-s04e04-hdtv-x264-2hd-ettv-t8118639.html', '/supernatural-s09e06-hdtv-x264-lol-ettv-t8169899.html']
Printing newdata which should be Recent Torrents from Filter WebData function
['/the-big-bang-theory-s07e08-hdtv-x264-lol-ettv-t8180359.html', '/the-walking-dead-s04e05-hdtv-x264-2hd-ettv-t8158163.html', '/the-vampire-diaries-s05e07-proper-hdtv-x264-2hd-ettv-t8180537.html', '/the-big-bang-theory-7x7-hdtv-lol-t8141134.html', '/how-i-met-your-mother-s09e09-hdtv-x264-2hd-eztv-t8164029.html', '/sons-of-anarchy-s06e10-hdtv-x264-asap-ettv-t8170162.html', '/american-horror-story-s03e06-hdtv-x264-killers-ettv-t8175485.html', '/sleepy-hollow-s01e07-hdtv-x264-lol-eztv-t8164318.html', '/elementary-2x8-hdtv-lol-t8180367.html', '/the-originals-s01e07-hdtv-x264-lol-ettv-t8169688.html', '/the-blacklist-s01e07-hdtv-x264-lol-eztv-t8124923.html', '/modern-family-s05e07-hdtv-x264-2hd-eztv-t8175344.html', '/arrow-s02e06-proper-hdtv-x264-2hd-eztv-t8179975.html', '/white-collar-s05e05-hdtv-x264-2hd-eztv-t8180828.html', '/homeland-s03e07-720p-hdtv-x264-killers-eztv-t8158378.html', '/greys-anatomy-s10e09-hdtv-x264-lol-ettv-t8180608.html', '/how-i-met-your-mother-s09e08-hdtv-x264-2hd-eztv-t8124354.html', '/arrow-s02e05-hdtv-x264-lol-ettv-t8135416.html', '/boardwalk-empire-s04e10-hdtv-x264-2hd-eztv-t8158693.html', '/the-simpsons-s25e04-hdtv-x264-lol-eztv-t8157997.html', '/modern-family-s05e06-hdtv-x264-asap-eztv-t8061643.html', '/new-girl-s03e07-hdtv-x264-lol-eztv-t8130237.html', '/the-tomorrow-people-us-s01e06-hdtv-x264-lol-eztv-t8174964.html', '/the-walking-dead-s04e04-hdtv-x264-2hd-ettv-t8118639.html', '/supernatural-s09e06-hdtv-x264-lol-ettv-t8169899.html']
Mining Ended
Relative Search
Diagnostic line ['*arrow*', '*grimm*', '*elementary*', '*American*Horror*', '*once*Upon*aTime*', '*Agents*of*shield*']
Diagnostic line None
Searching for My Torrents
Reset Vars
Diagnostic line *arrow*
Traceback (most recent call last):
  File "C:\Python33\scratchpad.py", line 121, in <module>
    SearchTorrents(MyPrograms,RecentTorrentLinks)
  File "C:\Python33\scratchpad.py", line 103, in SearchTorrents
    matchobj = fnmatch.filter(TorrentList,item)
  File "C:\Python33\lib\fnmatch.py", line 59, in filter
    for name in names:
TypeError: 'NoneType' object is not iterable

程序代码

WebUrl = 'http://kickasstorrents.come.in/tv/'
MyPrograms = ['*arrow*','*grimm*','*elementary*','*American*Horror*','*once*Upon*aTime*','*Agents*of*shield*']
loop = 0
RecentTorrentLinks = []



def RetrieveWebData(MyUrl):
    try:
        #create Url Opener
        opener = urllib.request.build_opener()
            #Diagnostic Line
        print( "Opener Created")
        #Simulation as a browser
        opener.addheaders =[('User-agent','Mozilla/5.0')]
            #Diagnostic Line
        print( "Opener Headers Added")
        url = (MyUrl)
            #Diagnostic Line
        print( "Url Assigned")
        #Open URL and read Data
        page = opener.open(url).read()
            #Diagnostic Line
        print( "Page Open and Read")
            #Diagnostic Line
        print(len(page))
        newdata = FilterWebData(page)
            # Diagnotic Line
        print ("Printing newdata which should be Recent Torrents from Filter WebData function")
        print (newdata)
        return newdata

    except urllib.error.URLError as e:
        print(e)
        if e.code == 503:
            print (loop ++ 1)
            RetrieveWebData(WebUrl)
        else:
            print('Error Occured :-' + e + ' Code :- '+ e.code)
            sys.exit()




def FilterWebData(RawData):
    RecentTors = []

    try:

        soup = BeautifulSoup(RawData)
            #Diagnostic Line
        print (" soup assigned to rawdata")

        TorData = soup.find_all("a", {"class" : "torType"})
           #Diagnostic Line
        print (" filtered for torType Class")

        soup = BeautifulSoup(str(TorData))
           #Diagnostic Line
        print (" reassigned to soup to tordata")
        for link in soup.find_all('a'):
            RecentTors.append(link.get('href'))

           #Diagnostic Line
        print ("Links Filtered")
            # Diagnotic Line
        print ("Printing Recent Torrents from Filter WebData function")
        print (RecentTors)
        return RecentTors

    #Simpler Version of my code by StackOverlfow User
        #TorData = soup.find_all("a", {"class" : "torType", 'href': True})
        #return [link['href'] for link in TorData]

    except OSError as e:
        print("An error occurred during filtering",e)



def SearchTorrents(SearchCrit,TorrentList):
    try:
                    #Diagnostic Line
        print ('Diagnostic line ' + str(SearchCrit))
        print ('Diagnostic line ' + str(TorrentList))
                    #Diagnostic Line
        print ("Searching for My Torrents")
        item = " "
        matchobj = " "
                    #Diagnostic Line
        print ("Reset Vars")

        for item in SearchCrit:
                        #Diagnostic Line
            print ('Diagnostic line ' + item)
            #print ('Diagnostic line ' + str(TorrentList))
            matchobj = fnmatch.filter(TorrentList,item)
            print (matchobj)
    except OSError as e:
        print("An error occurred during searching",e)

    #Diagnostic Line
print ("Beginning Mining")
RecentTorrentLinks = RetrieveWebData(WebUrl)  

            #Diagnostic Line
print ("Mining Ended")

            #Diagnostic Line
print ("Relative Search")
            #Diagnostic Line
#print ("Diagnotic Line TorrentLinks ")
#print (RecentTorrentLinks)

SearchTorrents(MyPrograms,RecentTorrentLinks)

           #Diagnostic Line
print ("Relative Ended")

Answer 1

您的TorrentList实际上是None，这意味着您无法对其进行迭代。

更改此行

matchobj = fnmatch.filter(TorrentList,item)

到

if TorrentList is not None:
    matchobj = fnmatch.filter(TorrentList,item)
else:
    # Throw whatever error/exception you need

Answer 2

看起来变量TorrentList有时不是列表，而是NoneType。因此，当您尝试过滤它时，它会抛出错误。您应该在代码中添加一个检查，以确保它在过滤之前确实是一个列表。

您可以在输出中看到错误之前打印这些行：

Diagnostic line ['*arrow*', '*grimm*', '*elementary*', '*American*Horror*', '*once*Upon*aTime*', '*Agents*of*shield*']
Diagnostic line None

这些是以下行的输出：

print ('Diagnostic line ' + str(SearchCrit))
print ('Diagnostic line ' + str(TorrentList))

如您所见，TorrentList打印出“无”，而不是列表。因此，正如我上面所说，当您尝试在以下行中对此进行过滤时：

matchobj = fnmatch.filter(TorrentList,item)

它会抛出错误。

TypeError：'NoneType'对象不可迭代，Python

2 个答案: