source/_templates/navbar-logo.html

{# Origin: https://github.com/pydata/pydata-sphinx-theme/blob/d4f888ec5e63628d6e3c5bf81b6b689a20b3927c/src/pydata_sphinx_theme/theme/pydata_sphinx_theme/components/navbar-logo.html #}
{# LOGO IMAGE #}

{% if pagename == "index" %}
  <span class="navbar-brand logo landing">
{% else %}
  <a class="navbar-brand logo" href="{{ pathto(root_doc) }}">
{% endif %}

{% set is_logo = "light" in theme_logo["image_relative"] %}
{% set alt = theme_logo.get("alt_text", "" if theme_logo.get("text") else "%s - Home" % docstitle) %}
{% if is_logo %}
  {% if default_mode is undefined or default_mode == "auto" %}
    {% set default_mode = "light" %}
  {% endif %}
  {% set js_mode = "light" if default_mode == "dark" else "dark" %}
  <img src="{{ theme_logo['image_relative'][default_mode] }}" class="logo__image only-{{ default_mode }}" alt="{{ alt }}"/>
  <script>document.write(`<img src="{{ theme_logo['image_relative'][js_mode] }}" class="logo__image only-{{ js_mode }}" alt="{{ alt }}"/>`);</script>
{% endif %}

{% if pagename == "index" %}
  </span>
{% else %}
  </a>
{% endif %}

{# LOGO TEXT #}

{% if pagename in ["index", "404"] %}
  <span class="navbar-brand logo-title landing">
    <p class="title logo__title">Lets-Plot</p>
  </span>
{% else %}
  <a class="navbar-brand logo-title" href="{{ pathto('python/index') }}">
    <p class="title logo__title">Lets-Plot for Python</p>
  </a>
{% endif %}