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\Administrator\Desktop\test.txt','w',encoding='utf-8')
-file1.write('小兰：12本''小丽：11本''李文：9本''张伟：16本')
-file1.close()
\ No newline at end of file
+new_data=""
+with open(r'C:\Users\6\Desktop\test.txt','r',encoding='utf-8') as file1:
+    for data in file1:
+        if "小兰：12本"in data:
+            data=data.replace("小兰：12本","小兰：2000本")
+        new_data=new_data+data
+with open(r'C:\Users\6\Desktop\test.txt','w',encoding='utf-8') as file1:
+    file1.write(new_data)
+print(new_data)
\ No newline at end of file