save project

1.py

+with open(r"C:\Users\双师12\Desktop\Microsoft 捐赠.txt","a",encoding = "utf-8") as f:
+    f.write("小兰:12/n")
+    f.write("小丽:11/n")
+    f.write("李文:9/n")
+    f.write("张伟:16/n")
\ No newline at end of file

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'
-f = open(r"C:\Users\双师12\Desktop\Microsoft 捐赠.txt","w",encoding = "utf-8")
-f.write("小兰:12")
-f.write("小丽:11")
-f.write("李文:9")
-f.write("张伟:16")
+f = open(r"C:\Users\双师12\Desktop\Microsoft 捐赠.txt","a",encoding = "utf-8")
+f.write("小兰:12/n")
+f.write("小丽:11/n")
+f.write("李文:9/n")
+f.write("张伟:16/n")
 f.close()
+
+whit open(r"C:\Users\双师12\Desktop\Microsoft 捐赠.txt","r",encoding = "utf-8") as f:
+    for data in f:
+        if "小丽:11" in data:
+            print("数据在文件中")
\ No newline at end of file