[Python] Trying to update context variable from included template in Jinja2

I am trying to update variable from an included template in Jinja 2

base.j2:

{% set ns = namespace(indent_lvl = 5) %}
{% filter indent(width=4*ns.indent_lvl, first=True) %}
base_indent_lvl: {{ns.indent_lvl}}
{% include template_file with context %}
{% endfilter %}


template_file.j2:

{% set ns.indent_lvl= ns.indent_lvl+1 %}
template_indent_lvl: {{ns.indent_lvl}}


So ns.indent_lvl increase when it enter in the template but is not save when it returning to base template. Is there a way to do it?

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