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'
 # 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\Administrator\DesktopC:\Users\Administrator\Desktop\test.txt','r',encoding ='utf-8') as file:
 with open(r'C:\Users\Administrator\DesktopC:\Users\Administrator\Desktop\test.txt','r',encoding ='utf-8') as file:
     file.write('小兰:12本')
     file.write('小兰:12本')
     for data in file:
     for data in file:
-        print(data)    
+        data.replace('小兰:12本','小兰:13本')    
+    new_data+=data
     if '小兰:12本' in file:
     if '小兰:12本' in file:
-        print(data)
+        print(data)
\ No newline at end of file
+with open(r'C:\Users\Administrator\DesktopC:\Users\Administrator\Desktop\test.txt','w',encoding ='utf-8') as fil
+    file.write(new_data)
\ No newline at end of file