auto save

成绩更新程序.py

+a={"a同学":70,"B同学":80,"C同学":90}
+a={"a同学":70,"B同学":80,"C同学":90}
+k=input("学生姓名")
+v=input("学生分数")
+if k in a:
+    if int(v)>a[k]:
+        a[k] = int(v)
+        print("已更新")
+    else:
+        print("没有更新")
+else:
+    a[k]=int(v)
+    print("已添加")
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