"字符串连接中的 Python os.path.join() 和“+”"

Question

If I want to use a path "a\/b", what is the difference between os.path.join("a\/","b") and "a\/"+"b" ?

Answer 1

The separator character is OS dependent. If you're going to be using your script on both windows and, say, linux, you should use the os.path.join<\/code> function.
It probably doesn't matter if you're going to keep your script on the same machine, but you could also use the os.sep<\/code> function to get the current system's separator character: https:\/\/docs.python.org\/3\/library\/os.html#os.sep<\/a>

Answer 2

You can use os.path and its functions, which take care of OS-specific paths. Will work on Windows with backslashes '\\' and Unix (including Mac OS X) with '\/'.

>>> import os
>>> os.path.join('root', 'subdir', 'dir', 'filename.ext')
'root/subdir/dir/filename.ext'