Implement f-string like magic to pimp Django's format_html()

I would like to pimp format_html() of Django.

It already works quite nicely, but my IDE (PyCharm) thinks the variables are not used and paints them in light-gray color:

AFAIK f-strings use some magic rewriting.

Is there a way to implement this, so that the IDE knows that the variables get used?

Related: Implement f-string like syntax, with Django SafeString support

Here is my current implementation:

def h(html):
    """
    Django's format_html() on steroids
    """
    def replacer(match):
        call_frame = sys._getframe(3)
        return conditional_escape(
            eval(match.group(1), call_frame.f_globals, call_frame.f_locals))
    return mark_safe(re.sub(r'{(.*?)}', replacer, html))

Somebody raised security concerns: I don't plan to create CMS where a user can edit these templates. These template h-strings are only for developers to have a convenient way to create HTML.

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