[BangPypers] remove svn checkout folder

[Sateesh Kumar]

On Fri, Oct 21, 2011 at 12:37 PM, Shashidhar Paragonda <
shashidhar85 at gmail.com> wrote:

* Then i tried *shutil.rmtree(path/to/folder/)  but here I am
> facing permission denied error
>
>         code : os.chmod(path/to/folder, 0777)
>                    if os.access(path/to/folder, os.R_OK):
>                           shutil.rmtree(path/to/folder/)
>         is there any problem in this code or which is best solution for the
> above requirement.
>

What you are doing is changing the permission of the folder, but if
there are files inside that folder which have the 'Read-Only'
attribute set then their removal would fail and an exception
thrown. If you examine the stack trace you can find the file whose
removal attempt failed.

shutil.rmtree can take a function as a callback and you can make use
of that feature to handle failures in file/subfolder removal and to remove
them. Such an approach is explained here:

http://stackoverflow.com/questions/1213706/what-user-do-python-scripts-run-as-in-windows
http://stackoverflow.com/questions/2656322/python-shutil-rmtree-fails-on-windows-with-access-is-denied

Also when you are passing windows path as an argument to Python
functions it is better to pass them as raw strings[1]. Your invocation
should be
in the form:

os.listdir(r'c:\temp')
and so on.

HTH,
sateesh

1. http://docs.python.org/tutorial/introduction.html (Section 3.1.2 Strings)