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'
-with open(r"C:\Users\admin\Desktop\book.txt","a",encoding="utf-8")as file:
+with open(r"C:\Users\admin\Desktop\book.txt","w",encoding="utf-8")as file:
     file.write("小兰：12本")
     file.write("小丽：11本")
     file.write("李文：9本")
     file.write("张伟：16本")
+with open(r"C:\Users\admin\Desktop\book.txt","r",encoding="utf-8")as file:
+    for data in file:
+        if "小兰：12本" in data:
+            print("小兰在文件中~")
+        if "小强：10本" in data:
+            print("小强在文件中~")
\ No newline at end of file