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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def djng_locale_script(context, default_language='en'):
 """ Returns a script tag for including the proper locale script in any HTML page. This tag determines the current language with its locale. Usage: <script src="{% static 'node_modules/angular-i18n/' %}{% djng_locale_script %}"></script> or, if used with a default language: <script src="{% static 'node_modules/angular-i18n/' %}{% djng_locale_script 'de' %}"></script> """

    language = get_language_from_request(context['request'])
    if not language:
        language = default_language
    return format_html('angular-locale_{}.js', language.lower())