On 16/09/12 10:02:09, jyoun...@kc.rr.com wrote:
> Thank you "Nobody" and Hans!
You're welcome!
>> You may want to use the subprocess module to run 'ditto'. If
>> the destination folder does not exist, then ditto will copy MacOS
>> specific aspects such as resource forks, ACLs and HFS meta-data.
>
> This looks like a good direction to go. Maybe something like:
>
>>>> import os
>>>> import subprocess
>>>>
>>>> p1 = os.path.expanduser('~/Desktop/IN/Test/')
>>>> p2 = os.path.expanduser('~/Desktop/OUT/Test/')
>>>>
>>>> cmd = 'ditto -vV "' + p1 + '" "' + p2 + '"'
>>>>
>>>> v = subprocess.check_output(cmd, shell=True)
This looks iffy: it would break if there would be any double
quotes in p1 or p2. You might think that os.path.expanduser
would never expand '~' to something containing a double quote,
but you'd be wrong:
>>> import os
>>> os.environ['HOME'] = 'gotcha!"; rm -rf '
>>> print(os.path.expanduser('~/Desktop/IN/Test/'))
gotcha!"; rm -rf /Desktop/IN/Test/
It's easy and safer to avoid using 'shell=True' option:
cmd = ['ditto', '-vV', p1, p2]
v = subprocess.check_output(cmd, shell=False)
In this case, the safer version also happens to be shorter and
more readable. But you should get into the habit of using
shell=False whenever possible, because it is much easier to
get it right.
Hope this helps,
-- HansM
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