查看django版本：
F:\>python -c "import django;print django.VERSION;print django.get_version();" (1, 8, 0, 'final', 0) 1.8 F:\>
F:\>python Python 2.7.10 (default, May 23 2015, 09:40:32) [MSC v.1500 32 bit (Intel)] on wi n32 Type "help", "copyright", "credits" or "license" for more information. >>> import django >>> django.VERSION (1, 8, 0, 'final', 0) >>> django.get_version() '1.8' >>>
u'polls' is not a registered namespace Request Method: GET Request URL: http://127.0.0.1:8000/polls/2/ Django Version: 1.8 Exception Type: NoReverseMatch Exception Value: u'polls' is not a registered namespace Exception Location: C:\Python27\lib\site-packages\django\core\urlresolvers.py in reverse, line 575 Python Executable: C:\Python27\python.exe Python Version: 2.7.10
In template F:\python\tcsite\polls\templates\polls\detail.html, error at line 13 u'polls' is not a registered namespace 3 <html> 4 <head> 5 <title>detail:{{ question }}</title> 6 </head> 7 <body> 8 9 <h1>{{ question.question_text }}</h1> 10 11 {% if error_message %}<p><strong>{{ error_message }}</strong></p>{% endif %} 12 13 <form action=" {% url 'polls:vote' question.id %} " method="post"> 14 {% csrf_token %} 15 {% for choice in question.choice_set.all %} 16 <input type="radio" name="choice" id="choice{{ forloop.counter }}" value="{{ choice.id }}"/> 17 <label for="choice{{ forloop.counter }}">{{ choice.choice_text }}</label><br/> 18 {% endfor %} 19 <input type="submit" value="Vote"/> 20 </form> 21 22 <hr/> 23 <!--
解决办法：
将F:\python\tcsite\urls.py中
url(r'^polls/', include('polls.urls')),
改为
url(r'^polls/', include('polls.urls', namespace="polls")),
在项目/url.py中的include参数增加namespace="polls"后，上述问题解决，但在打开http://127.0.0.1:8000/polls/时报错：
Reverse for 'detail' with arguments '(2,)' and keyword arguments '{}' not found. 0 pattern(s) tried: [] Request Method: GET Request URL: http://127.0.0.1:8000/polls/ Django Version: 1.8.5 Exception Type: NoReverseMatch Exception Value: Reverse for 'detail' with arguments '(2,)' and keyword arguments '{}' not found. 0 pattern(s) tried: [] Exception Location: D:\Python27\lib\site-packages\django\core\urlresolvers.py in _reverse_with_prefix, line 495 Python Executable: D:\Python27\python.exe Python Version: 2.7.8
Error during template rendering In template F:\python\tcsite\polls\templates\polls\index.html, error at line 11 Reverse for 'detail' with arguments '(2,)' and keyword arguments '{}' not found. 0 pattern(s) tried: [] 1 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 2 "http://www.w3.org/TR/html4/loose.dtd"> 3 <html> 4 <head> 5 <title>polls</title> 6 </head> 7 <body> 8 {% if latest_question_list %} 9 <ul> 10 {% for question in latest_question_list %} 11 <li><a href=" {% url 'detail' question.id %} ">{{ question.question_text }}</a></li> 12 {% endfor %} 13 </ul> 14 {% else %} 15 <p>No polls are available.</p> 16 {% endif %} 17 </body> 18 </html>
解决办法：
将第index.html第11行
<li><a href="{% url 'detail' question.id %}">{{ question.question_text }}</a></li>
改为：
<li><a href="{% url 'polls:detail' question.id %}">{{ question.question_text }}</a></li>
http://stackoverflow.com/questions/33151816/noreversematch-at-polls-django-tutorial
