Python 2.6.4 (r264:75706, Mar 7 2010, 02:18:40)
[GCC 4.4.1] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import os
>>> os.mkdir('/home/baz/tmp/xxx')
>>> f = open('/home/baz/tmp/abc.txt', 'w')
>>> f.write('abc')
>>> f.close()
>>> os.chdir('/home/baz/tmp/xxx')
>>> os.getcwd()
'/home/baz/tmp/xxx'
>>> os.rmdir(os.getcwd())
>>> os.getcwd()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: [Errno 2] No such file or directory
>>> open('../abc.txt').read()
'abc'
>>>
can anybody explain how python is able to read the file at the end of
this session? i'm guessing it's a platform specific thing as i'm pretty
sure the above sequence of commands wouldn't work on windows (i.e.
attempting to remove the cwd would produce an error). but how can python
determine the parent directory of a directory that no longer exists?
this actually caused a bug for me. i was trying to ensure that my
program always resolved any file-names given on the command line by
using os.path.realpath(). i had assumed that if realpath failed, then
open would also fail - but not so!
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