Say I have this template with an extends call:

foo.html:

{% extends 'base.html' %}

I load it:

jinja2_env.get_template('foo.html', globals=my_globals}

This causes two calls to Environment._load_template: First, for foo.html, the for base.html.

Environment._load_template caches both templates.

The crucial point is that for the second call, the "globals" parameter to Environment._load_template is missing my_globals.

If I now attempt to load the base template directly:

jinja2_env.get_template('base.html', globals=my_globals}

The cache will be used, and my globals will not be available.

Using 2.7.2