save project

diy.py

@@ -3,4 +3,6 @@ file1=open(r'/Users/xujunheng/Desktop/test.txt','a',encoding='utf-8')
 file1.write('小兰，12本\n')
 file1.write('小明，20本\n')
 file1.write('小刚，19本\n')
-file1.close()
\ No newline at end of file
+file1.close()
+with open(r'/Users/xujunheng/Desktop/test.txt','a',encoding='utf-8') as file1:
+    file1.write('小k，19本\n')
\ No newline at end of file