Question

我正在使用pycharm在django上开展一个项目。我在views.py中有这个观点：

def all_songs(request, filter_by):
    if not request.user.is_authenticated():
        return render(request, 'music/login.html')
    else:
        try:
            song_ids = []
            for album in Album.objects.all():
                for song in album.song_set.all():
                    song_ids.append(song.pk)
            users_songs = Song.objects.filter(pk__in=song_ids)
            for album in GenericAlbum.objects.all():
                for song in album.genericsong_set.all():
                    song_ids.append(song.pk)
            generic_songs = GenericSong.objects.filter(pk__in=song_ids)
        except Album.DoesNotExist:
            users_songs = []
        except GenericAlbum.DoesNotExist:
            generic_songs = []
        return render(request, 'music/songs.html', {
            'song_list_all': users_songs,
            'generic_song_list': generic_songs,
            'filter_by': filter_by,
        })

当我点击运行此方法的页面时，一切正常，但我收到错误：

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
[12/Oct/2017 14:57:50] "GET /media/Eminem_-_Mockingbird.mp3 HTTP/1.1" 200 212992
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionAbortedError: [WinError 10053] Une connexion établie a été abandonnée par un logiciel de votre ordinateur hôte
[12/Oct/2017 14:57:50] "GET /media/Eminem_-_Mockingbird.mp3 HTTP/1.1" 500 59
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 59866)
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionAbortedError: [WinError 10053] Une connexion établie a été abandonnée par un logiciel de votre ordinateur hôte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
[12/Oct/2017 14:57:50] "GET /media/Scorpions_-_Wind_Of_Change.mp3 HTTP/1.1" 200 1638400
[12/Oct/2017 14:57:50] "GET /media/The_Cranberries_-_Zombie.mp3 HTTP/1.1" 200 1597440
[12/Oct/2017 14:57:50] "GET /media/Bon_Jovi_-_Always.mp3 HTTP/1.1" 200 1449984
Traceback (most recent call last):
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
[12/Oct/2017 14:57:50] "GET /media/Bon_Jovi_-_Hey_God_Long_Version.mp3 HTTP/1.1" 200 1318912
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
[12/Oct/2017 14:57:50] "GET /media/Scorpions_-_Wind_Of_Change.mp3 HTTP/1.1" 500 59
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
----------------------------------------
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
Traceback (most recent call last):
Exception happened during processing of request from ('127.0.0.1', 59868)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
[12/Oct/2017 14:57:50] "GET /media/The_Cranberries_-_Zombie.mp3 HTTP/1.1" 500 59
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
----------------------------------------
Exception happened during processing of request from ('127.0.0.1', 59869)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
[12/Oct/2017 14:57:50] "GET /media/Bon_Jovi_-_Hey_God_Long_Version.mp3 HTTP/1.1" 500 59
----------------------------------------
[12/Oct/2017 14:57:50] "GET /media/Bon_Jovi_-_Always.mp3 HTTP/1.1" 500 59
Exception happened during processing of request from ('127.0.0.1', 59871)
----------------------------------------
[12/Oct/2017 14:57:50] "GET /media/eminem__lose_yourself_lyrics.mp3 HTTP/1.1" 200 794624
Exception happened during processing of request from ('127.0.0.1', 59870)
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
Traceback (most recent call last):
Traceback (most recent call last):

During handling of the above exception, another exception occurred:

  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
Traceback (most recent call last):
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionAbortedError: [WinError 10053] Une connexion établie a été abandonnée par un logiciel de votre ordinateur hôte
[12/Oct/2017 14:57:50] "GET /media/eminem__lose_yourself_lyrics.mp3 HTTP/1.1" 500 59
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
----------------------------------------
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
Exception happened during processing of request from ('127.0.0.1', 59867)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)

During handling of the above exception, another exception occurred:

  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())

During handling of the above exception, another exception occurred:

  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
ConnectionResetError: [WinError 10054] Une connexion existante a dû être fermée par l’hôte distant
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()

During handling of the above exception, another exception occurred:

  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'split'
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 138, in run
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
----------------------------------------
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 279, in write
    self._write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 453, in _write
    result = self.stdout.write(data)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 775, in write
    self._sock.sendall(b)
ConnectionAbortedError: [WinError 10053] Une connexion établie a été abandonnée par un logiciel de votre ordinateur hôte

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 141, in run
    self.handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 88, in handle_error
    super(ServerHandler, self).handle_error()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 368, in handle_error
    self.finish_response()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 180, in finish_response
    self.write(data)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 274, in write
    self.send_headers()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 331, in send_headers
    if not self.origin_server or self.client_is_modern():
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 344, in client_is_modern
    return self.environ['SERVER_PROTOCOL'].upper() != 'HTTP/0.9'
TypeError: 'NoneType' object is not subscriptable

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
----------------------------------------
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
TypeError: 'NoneType' object is not subscriptable
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()

During handling of the above exception, another exception occurred:

  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
Traceback (most recent call last):
AttributeError: 'NoneType' object has no attribute 'split'
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 639, in process_request_thread
    self.finish_request(request, client_address)
----------------------------------------
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 361, in finish_request
    self.RequestHandlerClass(request, client_address, self)
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\socketserver.py", line 696, in __init__
    self.handle()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\site-packages\django\core\servers\basehttp.py", line 155, in handle
    handler.run(self.server.get_app())
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\handlers.py", line 144, in run
    self.close()
  File "C:\Users\elmou\AppData\Local\Programs\Python\Python36-32\lib\wsgiref\simple_server.py", line 35, in close
    self.status.split(' ',1)[0], self.bytes_sent
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------
AttributeError: 'NoneType' object has no attribute 'split'
----------------------------------------

我正在用python 3.6运行django 1.11。

Answer 1

有一些情况，您的方法返回None，这就是您从wsgi堆栈收到错误的原因。

您需要始终确保从视图方法返回一些内容。您也不需要try，因为您的任何通话都不会引发您想要捕获的异常。

使用login_required decorator进一步简化，您的方法现在更易于管理：

from django.contrib.auth.decorators import login_required

@login_required()
def all_songs(request, filter_by=None):

    song_ids = []

    for album in Album.objects.all():
      for song in album.song_set.all():
        song_ids.append(song.pk)

    users_songs = Song.objects.filter(pk__in=song_ids)

    for album in GenericAlbum.objects.all():
      for song in album.genericsong_set.all():
        song_ids.append(song.pk)

    generic_songs = GenericSong.objects.filter(pk__in=song_ids)

    return render(request, 'music/songs.html', {
            'song_list_all': users_songs,
            'generic_song_list': generic_songs,
            'filter_by': filter_by,
    })

Answer 2

我认为问题出在数据库上。主要是SQLite。当您对数据库进行任何更改而忘记提交或还原它时，数据库将进入锁定模式，这是您遇到此问题的时间。转到您的数据库并还原或提交更改以将其解锁，一切将恢复正常。

https://docs.djangoproject.com/en/2.1/topics/db/transactions/

＆＃39; NoneType＆＃39;对象没有属性＆＃39; split＆＃39; ：Django 1.11

2 个答案: