auto save

diy.py

-# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、'李文：9本
+new=''
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
 with open(r'C:\Users\Administrator\Desktop\test.txt','r',encoding='utf-8') as file1:
-    for data in file1:
-        if '小强:10本' in data:
-            print('小强数据在文件中')
-        if '小兰:12本' in data:
-            print('小兰数据在文件中')
-
+    for i in file1:
+        if '小强:10本' in i:
+            i=i.replace('小强:10本','小强:11本')
+            new+=i
+        else:
+            new+=i
+with open(r'C:\Users\Administrator\Desktop\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new)
+        
\ No newline at end of file

diy1.py

+a=[]
\ No newline at end of file