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'
-file1=open(r'C:\Users\dell\Desktop\test.txt','W',encoding='utf-8')
+new_data=''
+with open(r'C:\Users\dell\Desktop\test.txt','r',encoding='utf-8')as file1:
\ No newline at end of file
+    for data in file1:
+        if '李明:15本'in data:
+            data=data.replace('李明:15本','李明:16本')
+        new_data=data+new_data
+with open(r'C:\Users\dell\Desktop\test.txt','w',encoding='utf-8')as file1:
+    file1.write(new_data)
+with open(r'C:\Users\dell\Desktop\test.txt','r',encoding='utf-8')as file1:
+    a=file1.read()
+    print(a)
\ No newline at end of file