Overriding language binding programmically

browser_view.py

class YourBrowserView:      
    
    def some_method(self):
        
        original_lang = self.context.REQUEST['LANGUAGE']
        original_lang_binding = self.context.REQUEST['LANGUAGE_TOOL']
        
        target_language = 'de'        
        
        try:
            self._switch_language(target_language, self._create_language_binding(target_language))
            # do something here in the language you want
        finally:
            self._switch_language(original_lang, original_lang_binding)
    
    def _create_language_binding(self, lang):
        """Creates a new LanguageBinding object and sets the given language shortcut

        :param lang: language shortcut i.e. de, en
        :type lang: str
        """

        binding = LanguageBinding(self.context)
        binding.LANGUAGE = lang
        binding.DEFAULT_LANGUAGE = lang
        binding.LANGUAGE_LIST = []

        return binding
    
    def _switch_language(self, lang, lang_binding):
        """Creates a new LanguageBinding object and sets the given language shortcut

        :param lang: language shortcut i.e. de or en
        :type lang: str
        :param lang_binding: a language binding object
        :type lang_binding: LanguageBinding
        """

        self.context.REQUEST['LANGUAGE'] = lang
        self.context.REQUEST['LANGUAGE_TOOL'] = lang_binding