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'
+newData = ""
+
+
+with open(r'C:\Users\lenovo\Desktop\book.txt','r',encoding='utf-8')as file:
+    for data in file:
+        if '小兰：12本' in data:
+            data = data.replace('小兰：12本' , '小兰：123456789本' )
+        newData += data
+
+
+with open(r'C:\Users\lenovo\Desktop\book.txt','w',encoding='utf-8')as file:
+    file.write(newData)
\ No newline at end of file