gistfile1.txt

In [17]: foo = """
    ...: {% set custodian_tables = { 'ebs': { 'headers': { 'VolumeId': '', 'CreateTime': { 'display_name': 'CreationTime' }, 'State': '', 'Tags': '' } } } %}
    ...: {% macro get_header_name(header, resource, custodian_tables) -%}
    ...:   {% if 'display_name' in custodian_tables[resource]['headers'][header] %}
    ...:     {{ custodian_tables[resource]['headers'][header]['display_name'] }}
    ...:   {% else %}
    ...:     {{ header }}
    ...:   {% endif %}
    ...: {%- endmacro %}
    ...: {% macro create_table_header(table_headers, resource, custodian_tables) -%}
    ...:   {% for table_header in table_headers %}
    ...:     <th style="border:2px solid grey; text-align: center; padding: 5px;">{{ get_header_name(table_header, resource, custodian_tables) }}</th>
    ...:   {% endfor %}
    ...: {%- endmacro %}
    ...: {% macro create_table_rows(resources, table_headers) -%}
    ...:   {% for resource in resources %}
    ...:     <tr style="border:none; border-collapse:collapse">
    ...:     {% for columnName in table_headers %}
    ...:       <td style="border:2px solid grey; padding:4px">{{ resource[columnName] }}</td>
    ...:     {% endfor %}
    ...:     </tr>
    ...:   {% endfor %}
    ...: {%- endmacro %}
    ...: {% set table_headers = custodian_tables[policy['resource']]['headers'].keys() %}
    ...: {{ create_table_header(table_headers, resource, custodian_tables) }}
    ...: {{ create_table_rows(resources, table_headers) }}
    ...:
    ...: """

In [18]: template = jinja2.Template(foo)

In [19]: print template.render(policy=email_metadata['ebs']['policy'], resources=email_metadata['ebs']['resources'])
---------------------------------------------------------------------------
UndefinedError                            Traceback (most recent call last)
<ipython-input-19-bf15867b439f> in <module>()
----> 1 print template.render(policy=email_metadata['ebs']['policy'], resources=email_metadata['ebs']['resources'])

/usr/local/lib/python2.7/site-packages/jinja2/environment.pyc in render(self, *args, **kwargs)
   1006         except Exception:
   1007             exc_info = sys.exc_info()
-> 1008         return self.environment.handle_exception(exc_info, True)
   1009
   1010     def render_async(self, *args, **kwargs):

/usr/local/lib/python2.7/site-packages/jinja2/environment.pyc in handle_exception(self, exc_info, rendered, source_hint)
    778             self.exception_handler(traceback)
    779         exc_type, exc_value, tb = traceback.standard_exc_info
--> 780         reraise(exc_type, exc_value, tb)
    781
    782     def join_path(self, template, parent):

<template> in top-level template code()

/usr/local/lib/python2.7/site-packages/jinja2/runtime.pyc in _invoke(self, arguments, autoescape)
    549     def _invoke(self, arguments, autoescape):
    550         """This method is being swapped out by the async implementation."""
--> 551         rv = self._func(*arguments)
    552         if autoescape:
    553             rv = Markup(rv)

<template> in template()

/usr/local/lib/python2.7/site-packages/jinja2/runtime.pyc in _invoke(self, arguments, autoescape)
    549     def _invoke(self, arguments, autoescape):
    550         """This method is being swapped out by the async implementation."""
--> 551         rv = self._func(*arguments)
    552         if autoescape:
    553             rv = Markup(rv)

<template> in template()

/usr/local/lib/python2.7/site-packages/jinja2/environment.pyc in getitem(self, obj, argument)
    409         """Get an item or attribute of an object but prefer the item."""
    410         try:
--> 411             return obj[argument]
    412         except (AttributeError, TypeError, LookupError):
    413             if isinstance(argument, string_types):

UndefinedError: dict object has no element Undefined

In [20]: