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'、'张伟：16本'
-file1=open(r"C:\\Users\\Administrator\\Desktop\\test.txt","w",encoding="utf-8")
-file1.write("小兰:12本/n")
-file1.write("小丽:11本/n")
-file1.write("李文:9本/n")
-file1.write("张伟:16本/n")
-file1.close()
\ No newline at end of file
+#file1=open(r"C:\\Users\\Administrator\\Desktop\\test.txt","a",encoding="utf-8")
+#file1.write("小兰:12本\n")
+#file1.write("小丽:11本\n")
+#file1.write("李文:9本\n")
+#file1.write("张伟:16本\n")
+#file1.write("小强:10本\n")
+#file1.write("李明:15本\n")
+#file1.write("小兰:12本\n")
+#file1.close()
+with open(r"C:\\Users\\Administrator\\Desktop\\test.txt","a",encoding="utf-8") as file:
+    file.write("小美:0本\n")