Question

我正在尝试设置django项目，我似乎遇到了我的urlconf问题。我不确定这笔交易是什么，下面的错误对我来说并不完全有用。我认为它实际上与模板渲染没有任何关系，因为我逐步执行了执行路径，直到render_to_response函数完成之前（这是urlconf似乎导致错误的地方）并且模板对象被解析正确。

Traceback (most recent call last):
  File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2978, in _HandleRequest
    base_env_dict=env_dict)
  File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 411, in Dispatch
    base_env_dict=base_env_dict)
  File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2244, in Dispatch
    self._module_dict)
  File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2162, in ExecuteCGI
    reset_modules = exec_script(handler_path, cgi_path, hook)
  File "C:\Program Files\Google\google_appengine\google\appengine\tools\dev_appserver.py", line 2058, in ExecuteOrImportScript
    exec module_code in script_module.__dict__
  File "C:\Users\Ben\Development\workspace\ringbot\src\main.py", line 52, in <module>
    main()
  File "C:\Users\Ben\Development\workspace\ringbot\src\main.py", line 49, in main
    util.run_wsgi_app(application)
  File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\util.py", line 97, in run_wsgi_app
    run_bare_wsgi_app(add_wsgi_middleware(application))
  File "C:\Program Files\Google\google_appengine\google\appengine\ext\webapp\util.py", line 115, in run_bare_wsgi_app
    result = application(env, _start_response)
  File "C:\Python25\lib\site-packages\django\core\handlers\wsgi.py", line 241, in __call__
    response = self.get_response(request)
  File "C:\Python25\lib\site-packages\django\core\handlers\base.py", line 134, in get_response
    return self.handle_uncaught_exception(request, resolver, exc_info)
  File "C:\Python25\lib\site-packages\django\core\handlers\base.py", line 154, in handle_uncaught_exception
    return debug.technical_500_response(request, *exc_info)
  File "C:\Python25\lib\site-packages\django\views\debug.py", line 40, in technical_500_response
    html = reporter.get_traceback_html()
  File "C:\Python25\lib\site-packages\django\views\debug.py", line 114, in get_traceback_html
    return t.render(c)
  File "C:\Python25\lib\site-packages\django\template\__init__.py", line 178, in render
    return self.nodelist.render(context)
  File "C:\Python25\lib\site-packages\django\template\__init__.py", line 779, in render
    bits.append(self.render_node(node, context))
  File "C:\Python25\lib\site-packages\django\template\debug.py", line 81, in render_node
    raise wrapped
TemplateSyntaxError: <unprintable TemplateSyntaxError object>

这是我的顶级urlconf：

from django.conf.urls.defaults import *

urlpatterns = patterns('',
   (r'', include('pub.urls')),
)

并且pub.urls：

from django.conf.urls.defaults import *
import pub

urlpatterns = patterns('pub.views',
    (r'^$', 'index')
)

和pub.views.index：

# Create your views here.
from django.shortcuts import render_to_response
from django.http import HttpResponse
import openidgae

# this needs to be moved somewhere else, but for now it can live here
def index(request):
    lip = openidgae.get_current_person(request, HttpResponse())
    resp = render_to_response('pub/index.html', {'lip': lip}) # exception thrown here
    return resp

Answer 1

确保每个.py文件在语法上都是正确的。运行python manage.py shell，然后运行import每个模块，确保加载时没有错误。由于语法错误是python中的运行时错误，因此错误有时会出现在奇数时间和奇数位置。

Answer 2

这是另一个可能在将来派上用场的建议。

由于许多可能的原因，在Web界面中打印的堆栈跟踪并不总是最佳的。但是，您还可以将一个堆栈跟踪输出到控制台，这可能会为您提供网页上省略的信息。

最简单的方法是使用内置的网络服务器（即python manage.py runserver 0.0.0.0:8000）运行django，并使用浏览器访问该页面。您应该看到堆栈跟踪与控制台上的Web服务器日志记录输出内联，这可能包含“不可打印”的错误内容。

Answer 3

看起来问题是因为我的模板包含一个无法解析的{％url ...％}块，因此抛出了NoReverseMatch异常。来自django站点：请注意，如果您正在撤消的URL不存在，则会引发NoReverseMatch异常，这将导致您的站点显示错误页面。

由urlconf引起的django unprintable templatesyntaxerror对象？

3 个答案: