auto save

diy2-test.py

 class Dog:   # 狗类
     def __init__(self):
-        self.footNum = 4  # 腿
+        um = 2   # 耳朵
+        self.skin = "white"
+self.footNum = 4  # 腿
         self.eyeNum = 2   # 眼睛
         self.head = 1    # 头
-        self.earsNum = 2   # 耳朵
-        self.skin = "white"
-
+        self.earsN
     def run(self):
         print("狗狗飞快的跑起来")