use from searx.engines.duckduckgo import _fetch_supported_languages, supported_languages_url # NOQA so it is possible to easily remove all unused import using autoflake: autoflake --in-place --recursive --remove-all-unused-imports searx tests
compile XPath only once avoid redundant call to urlparse get_locale(webapp.py): avoid useless call to request.accept_languages.best_match