save project

diy.py

+k=input("请输入姓名")
+v=input("请输入成绩")
+dict={"张三":100,"李四":50,"小明":75,"小红":80}
+if k in dict:
+    if int(v)>dict[k]:
+        dict[k]=int(v)
+        print("成绩已更新，为"+str(v)+"分")
+    else:
+        print("很遗憾，成绩没有更新！")
+else:
+    dict[k]=int(v)
+    print("成绩已录入，为"+str(v)+"分")
\ No newline at end of file