auto save

diy5.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 
+
+#获取字典中的键
+for k in score.keys():
+    print(k)
+
+#获取字典中的值
+for v in score.values():
+    print(v)
+
+#获取键值对 
+for k,v in score.items():
+    print(k,v)
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