[IPython-dev] Problems using nbconvert with custom templates in IPython2.0-rc1

[Jones, Zach H]

All,

I have been using nbconvert to generate HTML views of notebooks with IPython1.x.  I based my work on this: http://nbviewer.ipython.org/urls/raw.githubusercontent.com/ipython/ipython-in-depth/master/notebooks/07%20-%20NbConvert%20Python%20library.ipynb?create=1#Programatically-make-templates

This work great with IPython1.x but is now not working with IPython2.0-rc.  I am hoping you can help me sort through my errors.

The code looks like this:
extra_tpls = DictLoader({'na_full': ..., 'na_report', ...})
c = Config()
c.HTMLExporter.default_template = 'na_report'
exportHTML = HTMLExporter(config=c, extra_loaders=[extra_tpls])
exportHTML.from_notebook_node(nb)

My DictLoader contains two templates:

  *   na_full extends html_basic.tpl
  *   na_report extends display_priority.tpl

I get errors with either template, but each template is different.

For na_full, it looks like html_basic.tpl cannot be found:

---------------------------------------------------------------------------
TemplateNotFound                          Traceback (most recent call last)
<ipython-input-23-008e826165f9> in <module>()
----> 1 exportHTML.from_notebook_node(nb)

/x/eng/rtpperf/python2.7-Debian-unstable-x86_64-tst/local/lib/python2.7/site-packages/IPython/nbconvert/exporters/templateexporter.pyc in from_notebook_node(self, nb, resources, **kw)
    213
    214         if self.template is not None:
--> 215             output = self.template.render(nb=nb_copy, resources=resources)
    216         else:
    217             raise IOError('template file "%s" could not be found' % self.template_file)

/x/eng/rtpperf/python2.7-Debian-unstable-x86_64-tst/local/lib/python2.7/site-packages/jinja2/environment.pyc in render(self, *args, **kwargs)
    967         except Exception:
    968             exc_info = sys.exc_info()
--> 969         return self.environment.handle_exception(exc_info, True)
    970
    971     def stream(self, *args, **kwargs):

/x/eng/rtpperf/python2.7-Debian-unstable-x86_64-tst/local/lib/python2.7/site-packages/jinja2/environment.pyc in handle_exception(self, exc_info, rendered, source_hint)
    740             self.exception_handler(traceback)
    741         exc_type, exc_value, tb = traceback.standard_exc_info
--> 742         reraise(exc_type, exc_value, tb)
    743
    744     def join_path(self, template, parent):

<template> in top-level template code()

TemplateNotFound: html_basic.tpl

For na_report, it looks like that it is not being found:

---------------------------------------------------------------------------
IOError                                   Traceback (most recent call last)
<ipython-input-20-008e826165f9> in <module>()
----> 1 exportHTML.from_notebook_node(nb)

/x/eng/rtpperf/python2.7-Debian-unstable-x86_64-tst/local/lib/python2.7/site-packages/IPython/nbconvert/exporters/templateexporter.pyc in from_notebook_node(self, nb, resources, **kw)
    215             output = self.template.render(nb=nb_copy, resources=resources)
    216         else:
--> 217             raise IOError('template file "%s" could not be found' % self.template_file)
    218         return output, resources
    219

IOError: template file "html_na_report" could not be found


I have also tried using the FileSystemLoader from jinja2 as well.  It loads the templates and I get the same errors.

Thanks for your help,
Zach Jones
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