save project

diy1.py

@@ -24,4 +24,17 @@ print(sb["体育"])
 #新增加一门科目
 print(sb)
 sb["杀人"]=1000
-print(sb)
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+print(sb)
+
+
+#修改一门科目的成绩
+sb["数学"]=998
+print(sb)
+
+sb=input("查找内容:")
+
+#新增加功能
+if"语文"in sb:
+    print(sb["语文"])
+else:
+    print("无")  
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