TemplateSyntaxError: Caught ImportError while rendering: No module named http (while migrating py2.5 to py2.7 application)

[Mariano Benitez]

I am porting my app to python 2.7 and I got it running until I try to render my templates. I cannot easily trace which tag or filter is causing trouble...

I get the following stack trace:

Caught ImportError while rendering: No module named http
Traceback (most recent call last):
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1511, in __call__
    rv = self.handle_exception(request, response, e)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1505, in __call__
    rv = self.router.dispatch(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1253, in default_dispatcher
    return route.handler_adapter(request, response)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 1077, in __call__
    return handler.dispatch()
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 547, in dispatch
    return self.handle_exception(e, self.app.debug)
  File "/base/python27_runtime/python27_lib/versions/third_party/webapp2-2.3/webapp2.py", line 545, in dispatch
    return method(*args, **kwargs)
  File "/base/data/home/apps/s~regalatufoto-v5/v44.354351615236544078/app/handlers/base.py", line 306, in get
    self.processResponse(self.GetResponse())
  File "/base/data/home/apps/s~regalatufoto-v5/v44.354351615236544078/app/handlers/base.py", line 222, in smartGetResponse
    response = self.buildResponse()
  File "/base/data/home/apps/s~regalatufoto-v5/v44.354351615236544078/app/handlers/base.py", line 344, in buildResponse
    content = renderHtmlTemplate(templatePath, values)
  File "/base/data/home/apps/s~regalatufoto-v5/v44.354351615236544078/app/utils.py", line 115, in renderHtmlTemplate
    return renderTemplate(path, values)
  File "/base/data/home/apps/s~regalatufoto-v5/v44.354351615236544078/app/utils.py", line 95, in renderTemplate
    return template.render(fullpath, values, debug=True)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/template.py", line 89, in render
    return t.render(Context(template_dict))
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/ext/webapp/template.py", line 169, in wrap_render
    return orig_render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/__init__.py", line 173, in render
    return self._render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/__init__.py", line 167, in _render
    return self.nodelist.render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/__init__.py", line 794, in render
    bits.append(self.render_node(node, context))
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/debug.py", line 72, in render_node
    result = node.render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/loader_tags.py", line 125, in render
    return compiled_parent._render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/__init__.py", line 167, in _render
    return self.nodelist.render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/__init__.py", line 794, in render
    bits.append(self.render_node(node, context))
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/debug.py", line 72, in render_node
    result = node.render(context)
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/template/defaulttags.py", line 361, in render
    from google.appengine._internal.django.core.urlresolvers import reverse, NoReverseMatch
  File "/base/python27_runtime/python27_lib/versions/1/google/appengine/_internal/django/core/urlresolvers.py", line 12, in <module>
    from google.appengine._internal.django.http import Http404
TemplateSyntaxError: Caught ImportError while rendering: No module named http

I included django 1.2 and PIL 1.1.7 in the libraries, but no difference...

Any help?

Thanks,

MAriano

[Mariano Benitez]

looking at the sources here I found this line: 

from google.appengine._internal.django.http import Http404

package http is not there in the sources, but I found that class Http404 is now in django package itself here

Any help is appreciated!!!

Thanks,

[Brian Quinlan]

Hi Mariano,

Thanks for bringing this up. I'll take a look at the issue some time
day and report back.

Cheers,
Brian

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[Brian Quinlan]

Hi Mariano,

You are using the Django "url" tag, which isn't supported by the
google.appengine.ext.webapp,template in the Python 2.7 runtime.

I'll try to make the error message more meaningful.

Cheers,
Brian

[Mariano Benitez]

Thanks Brian,

Further question: is there a way to create a similar tag and register it? so I do not need to rewrite all my templates.. :)

Something like this might work?

from google.appengine.ext import webapp

 

register = webapp.template.create_template_register()

def url(blah???):

  pass # but not really, do something here...

register.tag(url)

Does anyone have a snippet to get urls in the new runtime?

Thanks!!

[Brian Quinlan]

On Tue, Nov 1, 2011 at 6:50 PM, Mariano Benitez <maria...@gmail.com> wrote:

Thanks Brian,

Further question: is there a way to create a similar tag and register it? so I do not need to rewrite all my templates.. :)

You can look here for the current implementation:

http://code.google.com/p/googleappengine/source/browse/trunk/python/google/appengine/ext/webapp/template.py#271

But, depending on the design of your application, I'd consider:

1. changing your templates

2. using django.templates directly

Cheers,

Brian

 

Something like this might work?

from google.appengine.ext import webapp

 

register = webapp.template.create_template_register()

def url(blah???):

  pass # but not really, do something here...

register.tag(url)

Does anyone have a snippet to get urls in the new runtime?

Thanks!!

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