def get_user_passwd(self, host, realm, clear_cache=0):
        key = realm + '@' + host.lower()
        if key in self.auth_cache:
            if clear_cache:
                del self.auth_cache[key]
            else:
                return self.auth_cache[key]
        user, passwd = self.prompt_user_passwd(host, realm)
        if user and passwd: self.auth_cache[key] = (user, passwd)
        return user, passwd
dataset/ETHPy150Open kleientertainment/ds_mod_tools/pkg/win32/Python27/Lib/urllib.py/FancyURLopener.get_user_passwd/operator `or` -> `and`