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'
-newdata = ''
 f=open('./test.txt','w',encoding='UTF-8')
 f=open('./test.txt','w',encoding='UTF-8')
 f.write("小兰:12本\n")
 f.write("小兰:12本\n")
 f=open('./test.txt','a',encoding='UTF-8')
 f=open('./test.txt','a',encoding='UTF-8')
@@ -12,8 +11,3 @@ with open('./test.txt','r',encoding='UTF-8') as f:
     for data in f:
     for data in f:
         if'小兰' in data:
         if'小兰' in data:
             print("小兰在数据中")
             print("小兰在数据中")
\ No newline at end of file
-            data.replace('小兰:12','小兰:17')
-        newdata+=data
-
-with open('./test.txt','w',encoding='UTF-8') as f:
-    f.write(newdata)
\ No newline at end of file