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djangopython-3.x

Error "Reverso para 'django.contrib.auth.views.login' no encontrado" [duplicado]

Esta pregunta ya tiene una respuesta aquí:

NoReverseMatch después de la actualización de v1.9 a v1.10 1 respuesta

Recibo el siguiente mensaje de error y no pude encontrar una manera de solucionarlo.

NoReverseMatch at /login/
Reverse for '' not found. '' is not a valid view function or pattern name.
Request Method: GET
Request URL:    http://127.0.0.1:8000/login/?next=/
Django Version: 2.0.1
Exception Type: NoReverseMatch
Exception Value:    
Reverse for '' not found. '' is not a valid view function or pattern name.
Exception Location: C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\urls\resolvers.py in _reverse_with_prefix, line 632
Python Executable:  C:\Users\gokul\Desktop\TESTING\data\Scripts\python.exe
Python Version: 3.5.2
Python Path:    
['C:\\Users\\gokul\\Desktop\\TESTING\\data\\tagent',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data\\Scripts\\python35.zip',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data\\DLLs',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data\\lib',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data\\Scripts',
 'c:\\program files\\python35\\Lib',
 'c:\\program files\\python35\\DLLs',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data',
 'C:\\Users\\gokul\\Desktop\\TESTING\\data\\lib\\site-packages']


 > python manage.py runserver
Performing system checks...

System check identified no issues (0 silenced).
January 17, 2018 - 17:21:56
Django version 2.0.1, using settings 'tagent.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
[17/Jan/2018 17:22:03] "GET / HTTP/1.1" 302 0
Internal Server Error: /login/
Traceback (most recent call last):
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\exception.py", line 35, in inner
    response = get_response(request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\base.py", line 158, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\base.py", line 156, in _get_response
    response = response.render()
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\response.py", line 106, in render
    self.content = self.rendered_content
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\response.py", line 83, in rendered_content
    content = template.render(context, self._request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\backends\django.py", line 61, in render
    return self.template.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 175, in render
    return self._render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\loader_tags.py", line 155, in render
    return compiled_parent._render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\loader_tags.py", line 67, in render
    result = block.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\defaulttags.py", line 447, in render
    url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\urls\base.py", line 88, in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\urls\resolvers.py", line 632, in _reverse_with_prefix
    raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for 'django.contrib.auth.views.login' not found. 'django.contrib.auth.views.login' is not a valid view function or pattern name.
[17/Jan/2018 17:22:04] "GET /login/?next=/ HTTP/1.1" 500 153293

Tengo unlogin.html template with contiene lo siguiente:

<form method="post" action="{% url 'django.contrib.auth.views.login' %}">

Si cambio la etiqueta de URL de la siguiente manera, obtengo otro rastreo.

<form method="post" action="{% url django.contrib.auth.views.login %}">

Django version 2.0.1, using settings 'tagent.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CTRL-BREAK.
Internal Server Error: /login/
Traceback (most recent call last):
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\exception.py", line 35, in inner
    response = get_response(request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\base.py", line 158, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\core\handlers\base.py", line 156, in _get_response
    response = response.render()
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\response.py", line 106, in render
    self.content = self.rendered_content
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\response.py", line 83, in rendered_content
    content = template.render(context, self._request)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\backends\django.py", line 61, in render
    return self.template.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 175, in render
    return self._render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\loader_tags.py", line 155, in render
    return compiled_parent._render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 167, in _render
    return self.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\loader_tags.py", line 67, in render
    result = block.nodelist.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 943, in render
    bit = node.render_annotated(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\base.py", line 910, in render_annotated
    return self.render(context)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\template\defaulttags.py", line 447, in render
    url = reverse(view_name, args=args, kwargs=kwargs, current_app=current_app)
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\urls\base.py", line 88, in reverse
    return iri_to_uri(resolver._reverse_with_prefix(view, prefix, *args, **kwargs))
  File "C:\Users\gokul\Desktop\TESTING\data\lib\site-packages\django\urls\resolvers.py", line 632, in _reverse_with_prefix
    raise NoReverseMatch(msg)
django.urls.exceptions.NoReverseMatch: Reverse for '' not found. '' is not a valid view function or pattern name.
[17/Jan/2018 17:37:56] "GET /login/?next=/ HTTP/1.1" 500 152780

Podría alguien darme un puntero sobre lo que salió ma

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