auto save

demo.py

+x = 5
+if x%2 ==0:
+    print("偶数")
+else:
+    print("奇数")
\ No newline at end of file

diy2.py

 score = {'语文':91,'数学':88,'英语':85}
-
 # 请对字典进行遍历，将保存的分数以键值对的形式提取打印出来
 
+st = {"张三":score,"李四":socre,"王五":score}  # 字典中嵌套了字典
+
+# 按键遍历字典
+print("**一、直接用字典名字**")
+print("  **1、直接用字典名字**")
+for i in score:    # 一直接用字典名字
+    print(i)
+print("  **2、用字典的keys方法**")
+for i in score.keys(): # 二用字典的keys方法
+    print(i)
+
+print("**二、按值遍历字典**")
+for i in score.values():
+    print(i)
+
+print("**三、按键值对遍历字典**")
+for k,v in score.items():
+    print(k,v)
+
+