os.getcwd() throws Exception

I have situation when the current directory becomes invalid (ie, when some program deletes it). My Python script calls os.getcwd() which terminates with following exception

OSError: [Errno 2] No such file or directory

Ideally, it my script would automatically cd into parent directory in开发者_开发知识库 such situation. When is the recommended strategy for implementing this?

Note, if I try ls from the shell, I get ls: cannot open directory .: Stale NFS file handle

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Ideally, it my script would automatically cd into parent directory in such situation. When is the recommended strategy for implementing this?

Just use try/except block for that, that's what for we have them :)

try:
    os.getcwd()
except OSError:
    os.chdir("..")
    os.getcwd()

or something similar...

[edit] Anyway I guess such situation is realy bad for your app - deleted dir, or broken NFS connection etc, and this probably should not be silienced by just change dir - it depends on app of course...