1 #!/user/bin/env python 2 # -*- coding:utf-8 -*- 3 import contextlib 4 5 6 @contextlib.contextmanager 7 def file_open(file_name): 8 print(‘file_open‘) 9 yield 10 print(‘file end‘) 11 12 13 with file_open(‘zy.txt‘) as f_opened: 14 print(‘file processing‘)
file_open file processing file end
原文：https://www.cnblogs.com/zydeboke/p/11239423.html