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'、'张伟：16本'
 # 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_date=" "
 with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as file:
 with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as file:
     file.write('小兰：12本\n')
     file.write('小兰：12本\n')
 with open(r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8") as file:
 with open(r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8") as file:
@@ -7,6 +8,8 @@ with open(r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8") as fi
 file1=open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8")
 file1=open(r"C:\Users\Administrator\Desktop\test.txt","r",encoding="utf-8")
 for date in file1:
 for date in file1:
     if '小强：10本' in date:
     if '小强：10本' in date:
-        print("找到了")
+        date=date.replace('小强：15本','小强：10本')
+    new_date+=date
 file1.close()
 file1.close()
-
+with open(r"C:\Users\Administrator\Desktop\test.txt","w",encoding="utf-8") as file:
+    file.write(new_date)