save project

diy.py

 # 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'张伟：16本'
+new_data=""
 with open(r"C:\Users\xmbc\Desktop\test.txt","r",encoding="utf_8") as filel:
     for data in filel:
         if "小强：10" in data:
-            print("在")
-        else :
-            print("不在")
-            break
\ No newline at end of file
+            data=data.replace("小强：10本,""小强：11本")
+        new_data +=data
+with open(r"C:\Users\xmbc\Desktop\test.txt","w",encoding="utf_8") as filel:       
+    filel.write(new_data)
\ No newline at end of file