def _initialize(self, settings_module):
        """
        Initialize the settings from a given settings_module
        settings_module - path to settings module
        """
        #Get the global settings values and assign them as self attributes
        self.settings_list = []
        for setting in dir(global_settings):
            #Only get upper case settings
            if setting == setting.upper():
                setattr(self, setting, getattr(global_settings, setting))
                self.settings_list.append(setting)

        #If a settings module was passed in, import it, and grab settings from it
        #Overwrite global settings with theses
        if settings_module is not None:
            self.SETTINGS_MODULE = settings_module

            #Try to import the settings module
            try:
                mod = import_module(self.SETTINGS_MODULE)
            except __HOLE__:
                error_message = "Could not import settings at {0}".format(self.SETTINGS_MODULE)
                log.exception(error_message)
                raise ImportError(error_message)

            #Grab uppercased settings as set them as self attrs
            for setting in dir(mod):
                if setting == setting.upper():
                    if setting == "INSTALLED_APPS":
                        self.INSTALLED_APPS += getattr(mod, setting)
                    else:
                        setattr(self, setting, getattr(mod, setting))
                    self.settings_list.append(setting)

        #If PATH_SETTINGS is in the settings file, extend the system path to include it
        if hasattr(self, "PATH_SETTINGS"):
            for path in self.PATH_SETTINGS:
                sys.path.extend(getattr(self,path))

        self.settings_list = list(set(self.settings_list))
dataset/ETHPy150Open VikParuchuri/percept/percept/conf/base.py/Settings._initialize