python判断文件是否存在

import os
 
filename = r'/home/tim/workspace/test.txt'
if os.path.exists(filename):
    message = 'OK, the "%s" file exists.'
else:
    message = "Sorry, I cannot find the "%s" file."
print message % filename

参考：

https://www.jb51.net/article/66452.htm