Question

我不知道为什么，但最近我从Jinja模板渲染得到的回溯错误或多或少完全没有意义。

Traceback (most recent call last):
  File "/Users/me/my_project/app/distlib/tipfy/__init__.py", line 442, in wsgi_app
    response = self.handle_exception(request, e)
  File "/Users/me/my_project/app/distlib/tipfy/__init__.py", line 430, in wsgi_app
    rv = self.dispatch(request)
  File "/Users/me/my_project/app/distlib/tipfy/__init__.py", line 559, in dispatch
    return handler(self, request)(method, **request.rule_args)
  File "/Users/me/my_project/app/distlib/tipfy/__init__.py", line 165, in __call__
    response = method(*args, **kwargs)
  File "/Users/me/my_project/app/my_package/admin/menus/editor.py", line 22, in get
    return self.edit_week(menu, year, week_num, week_nums)
  File "/Users/me/my_project/app/my_package/admin/menus/editor.py", line 44, in edit_week
    return self.respond(data, context=ctx, template="admin/menus/edit.html")
  File "/Users/me/my_project/app/my_package/lib/irender.py", line 182, in respond
    return render(self, fmt, opts)
  File "/Users/me/my_project/app/my_package/lib/irender.py", line 207, in __call__
    val = render_func(handler, **opts)
  File "/Users/me/my_project/app/my_package/lib/irender.py", line 220, in render_html
    return handler.render_template(self.template, ctx)
  File "/Users/me/my_project/app/my_package/handlers.py", line 42, in render_template
    return jinja2.get_template(template).render(accum)
  File "/Users/me/my_project/app/distlib/jinja2/environment.py", line 894, in render
    return self.environment.handle_exception(exc_info, True)
  File "/Users/me/my_project/app/templates/admin/menus/edit.html", line 3, in top-level template code
    {% import "admin/utils.html" as utils %}
TypeError: integer argument expected, got float

当然，我可以通过删除大部分内容来推断实际错误的位置模板并查看错误何时开始，但这是一个愚蠢的发展方法

如何让追溯再次有用？

顺便说一句，我在main.py中有以下咒语：

def whitelist_jinja2_debug_modules():
    from google.appengine.tools.dev_appserver import HardenedModulesHook
    HardenedModulesHook._WHITE_LIST_C_MODULES += ['_ctypes', 'gestalt']

if app.dev:
    whitelist_jinja2_debug_modules()

Answer 1

即使这个问题已经很老了，答案也很容易获得（而不是同时）。要在Jinja中获得适当的堆栈跟踪，您需要拥有很长时间才能在Google应用引擎中使用的ctypes。我不完全确定目前的状态，但这个问题有一些解决方案： Debug Jinja2 in Google App Engine

为什么我的Jinja追溯毫无意义？

1 个答案: