os.path.join没有正确格式化路径

Question

I'm writing a command-line directory navigator for Windows in Python and struggling a bit with os.path.join. Here's, in essence, what I'm trying to do:

abspath = "C:\Python32\Projects\ls.py"
abspath = abspath.split('\\')
print(abspath) #this prints ['C:', 'Python32', 'Projects', 'ls.py']

if(options.mFlag):  
        print(os.path.join(*abspath)) #this prints C:Python32\Projects\ls.py
        m = time.ctime(os.path.getmtime(os.path.join(*abspath))) #this throws an exception

The problem is that os.path.join is not inserting a '/' after 'C:' and I can't figure out why. Any help?

Edit: In case anyone in the future comes here looking for a solution, I just added os.sep after "C:" instead of hardcoding a backslash and that worked.

Answer 1

From the documentation :

Note that on Windows, since there is a current directory for each drive, os.path.join("c:", "foo") represents a path relative to the current directory on drive C: (c:foo), not c:\\foo.

It's a little hard to tell what you're trying to accomplish, since all your code seems to be aiming at is to split the path and then put it back together exactly the way it was, in which case why split it in the first place? But maybe os.path.splitdrive will help you? It splits the drive letter from the path.

Answer 2

The docs ( http://docs.python.org/2/library/os.path.html ) specify this behaviour:

Note that on Windows, since there is a current directory for each drive, os.path.join("c:", "foo") represents a path relative to the current directory on drive C: (c:foo), not c:\\foo.