From d4476c1a292ed5b9e90a2bc6e6269c0577c4c695 Mon Sep 17 00:00:00 2001
From: Jerry <isjerryxiao@outlook.com>
Date: Tue, 9 Apr 2019 16:42:03 +0800
Subject: [PATCH] fix a bug

---
 utils.py | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/utils.py b/utils.py
index 3ee1c53..379a18c 100644
--- a/utils.py
+++ b/utils.py
@@ -72,12 +72,9 @@ def run_cmd(cmd, cwd=None, keepalive=False, KEEPALIVE_TIMEOUT=30, RUN_CMD_TIMEOU
             else:
                 self.__file = None
         def append(self, mystring):
-            if self.__short_return:
-                if super().__len__() >= 20:
-                    super.pop(0)
-                super().append(mystring)
-            else:
-                super().append(mystring)
+            if self.__short_return and super().__len__() >= 20:
+                super().pop(0)
+            super().append(mystring)
             if self.__file and type(mystring) is str:
                 self.__file.write(mystring)
         def __enter__(self):