auto save

diy.py

-file1=open(r"C:\Users\Think\Desktop\新建文件夹\test.txt","w",encoding='utf-8')
-file1.write('小兰：12')
-file1.close()
\ No newline at end of file
+#file1=open(r"C:\Users\Think\Desktop\新建文件夹\test.txt","w",encoding='utf-8')
+#file1.write('小兰：12本\n')
+#file1.close()
+with open(r"C:\Users\Think\Desktop\新建文件夹\test.txt","a",encoding='utf-8')as file:
+    file.write("小钱：17本\n")
\ No newline at end of file