shutil ignore fails on passing a tuple?

[Prasad, Ramit]

> >>> ipatterns
> ('*.txt', '*.hdf', '*.pdf', '*.png')
> >>> igf = shutil.ignore_patterns(ipatterns)
> >>> ignorethis = igf(ddftopdir,os.listdir(ddftopdir))
> 
> Traceback (most recent call last):
>   File "<pyshell#60>", line 1, in <module>
>     ignorethis = igf(ddftopdir,os.listdir(ddftopdir))
>   File "C:\Python27\lib\shutil.py", line 138, in _ignore_patterns
>     ignored_names.extend(fnmatch.filter(names, pattern))
>   File "C:\Python27\lib\fnmatch.py", line 49, in filter
>     pat=os.path.normcase(pat)
>   File "C:\Python27\lib\ntpath.py", line 46, in normcase
>     return s.replace("/", "\\").lower()
> AttributeError: 'tuple' object has no attribute 'replace'
> 
> >>> igg = shutil.ignore_patterns('*.txt', '*.hdf', '*.pdf', '*.png')
> >>> ignorethat = igg(ddftopdir, os.listdir(ddftopdir))
> >>> ignorethat
> set(['Chi2.png', 'DTSdata.hdf', 'TST.hdf', 'BullNoseDiffs.png',
> 'DTSall.hdf', 'Symmetry.pdf'])
> >>>
> ++++++++++++++++++++++++++++
> Why does it fail on passing in a tuple of ignore strings? I thought the ,
> (comma) is pretty much the tuple constructor (if that is the right word).
> 
> How can I solve this? Is there a way to convert a tuple of strings in a form
> that will be accepted?
>

Untested, but I think it should work.
igf = shutil.ignore_patterns(*ipatterns)

Ramit

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