@ -73,7 +73,7 @@ def run_cmd(cmd, cwd=None, keepalive=False, KEEPALIVE_TIMEOUT=30, RUN_CMD_TIMEOU
self.__file = None
def append(self, mystring):
if self.__short_return:
if len(super()) >= 20:
if super().__len__() >= 20:
super.pop(0)
super().append(mystring)
else: