save project

diy.py

@@ -8,9 +8,16 @@ file.close()
 with open(r"C:\Users\Administrator\Desktop\book.txt",'a',encoding='utf-8') as file:
     file.write('小强：12本\n')
     file.write('小明：15本\n')
+new="" 
 with open(r"C:\Users\Administrator\Desktop\book.txt",'r',encoding='utf-8') as file:
     for i in file:
         if '小强：12本\n' in i:
-            print("小强捐了12本")
+            print(1)
+            i.replace('小强：12本\n','小强：11本\n')    
         if '小兰：12本\n' in i:
-            print("小兰捐了12本")  
\ No newline at end of file
+            i.replace('小兰：12本\n','小兰：14本\n')  
+            print(1)  
+        new=new+i  
+with open(r"C:\Users\Administrator\Desktop\book.txt",'w',encoding='utf-8') as file:
+    file.write(new)
+    
\ No newline at end of file