auto save

diy.py

+# 写入同学们的捐赠明细：'小兰：12本'、'小丽：11本'、'李文：9本'、
+file1.write (r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8")
+
+file1.write("xiaolan,12ben\n")
+file1.write("xiaoli,11ben\n")
+file1.write("liwen,9ben\n")
+file1.write("zhangwei,16ben\n")
+with (r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8")as file1:
+file1.write("xiaoqian,12ben\n")
+file1.write("liwen,13ben\n")
+file1.close()
\ No newline at end of file

diy3.py

+with open(r"C:\Users\Administrator\Desktop\test.txt","a",encoding="utf-8")as file1:
+    for data in file1:
+        if "xiaozhan,10ben" in data:
+            print("xiaoqianzhaishujuzhong")
+        if "xiaozhan,12ben" in data:
+            print("xiaolanzhaishujuzhong")
+